C4 User

And it sounds like OP is an end user. Composer Pro is only available to authorized dealers, the Home Edition can’t add new devices to a system. One of the remote programming experts on this forum would probably be more than happy to help you out.

OK...so what sort of 4K, is it HDR, what options....what model Balun is it.
HDMI and CAT issues are possible, but I would look at the balun as the culprit first....

I think you may be getting your technical terms a bit confused here.  Do you perhaps mean your Control4 controllers ?  Your router may well be the same device that is acting as a modem.  If that was replaced it is very likely that some work will need to be done by a dealer to get some of your devices back 'under control'.  It's quite possible that some IP addresses have changed as a result of the new hardware, and Control4 may be relying on knowing those IP addresses in order to 'talk' to your devices.
Should be a fairly simple fix, but needs a dealer.

www.alarmsystemstore.com is a good DIY supplier. But a web search will give you others.

Yes, you can change what rooms are included in each instance of the driver with Composer HE. You can also change the "broadcast name" in HE which is the name of that driver instance your iOS devices will see. So if you don't like the name your dealer gives the driver (or you decide to change the rooms it controls) you can at least modify what shows up on iOS devices for AirPlay. Like was said, if you want to change them in C4, will need dealer or Renamer driver. 
It also doesn't hurt to add an extra instance (or a few) of the driver in case you want to group rooms. This way you don't have to go into the C4 app and add rooms if you have some frequently used groupings because C4 doesn't support AirPlay 2. 

Your dealer would need to add each ShairBridge driver and name them appropriately.  As far as I remember (and it’s years since I se ShairBridge up), you can change what rooms are included in each driver.  But if you want to rename the drivers, you would need your dealer to do this or the Renamer driver.

So some clarification and information for you to cut through the clutter. I'm a networking professional and have architected many very large high scale networks (500K user+ type environments). I was CCIE level 20 years ago, tier 3 tac level at a Cisco competitor, have moved on to other products but manage a networking team now. My guys install around 20K access points each year and thousands of switches, lots of large firewalls etc. I also do a little C4 programming as freelance for a dealer on the side, some C4 driver development as well as have a decently large install myself with lots of odd things. I run pro networking gear myself at home in my environment (Ruckus and Juniper switching, have use Mist, Aerohive, and Aruba APs with my current C4 setup as well).
All of the C4 restrictions around networking are because most dealers don't have an in-depth knowledge of networking. Let's discuss:
C4 uses broadcast - not true. Do a wireshark and set the display filter for eth.dst == ff:ff:ff:ff:ff:ff, you'll see lots of ARPs and probably netbios garbage but nothing important for C4 beyond ARP. C4 does rely heavily on multicast (wireshark display filter ip.addr >= 224.0.0.0). Ubiquiti is supposedly on the "no" list because of some UBNT hardware not forwarding multicast, specifically the routers as I recall. It works fine other than that rare case, no reason to change to Cisco or anything else.
Spanning Tree Protocol - Recommended against because it's a pain to configure properly and configured improperly you can have issues, I suppose they consider it better to allow a customer's network to get locked in a hard loop. It works fine, I've used MSTP, RPVST+ and some other flavors with C4 and it's fine if configured properly. Home grade switches may have poor implementations.
Flow Control - Properly implemented flow control is fine, the issue is most network hardware doesn't expose getting pause frames from devices that are overloaded..again instead of identifying the problem it turns into some sort of mystery that's resolved when the overloaded device is replaced randomly. This could be an issue in switch to switch communications or server to server where lots of disk IO is happening. If you're running pro gear and routinely check for pause frames as part of your troubleshooting not an issue.
QoS (Quality of Service) - I've also used switch level QoS with no issues, I would be cautitous about QoS or traffic shaping in home grade routers. Industry standard DiffServe on switches works fine. I would avoid punishing multicast or anything C4 is doing. I would also avoid voice prioritization for wireless unless you have someone who really knows what they're doing set it up. Lots of bugs in those features on most wireless products.
Wireless isolation (QoS setting) - This will cause problems RE C4 discovery works off of multicast.
Privacy Separator - presume this is same as client isolation, same deal
PaGP (Port Aggregation Protocol) - Works fine as well as LACP/802.3AD dynamic and static. If  you don't know how to configure these protocols you can of course create problems. There are special criteria in PIM environments with LAG/PAGP
IGMP Snooping (or any other Multicast Filtration of any kind) - Presuming from the bitching I hear from dealer friends about this, I presume that either the C4 gear doesn't prune/join properly or they've had networking folks not set this feature up. I run IGMP enabled on my Juniper switches but your mileage may vary. They left off storm control, DHCP snooping, Dynamic ARP inspection, etc here but again, I use it and it works fine.
So, the recipe for success, is keep all the C4 gear and all the clients that talk to it on the same VLAN, even over wireless. 
You should be able to have multiple VLANS working with PIM with a phone or touchpad on one side, however if any of the C4 devices don't handle IGMP properly you may still have issues. C4 doesn't really define which devices need which s, g publicly so any PIM troubleshooting would be a guessing game. You may also have RP overload in a home environment with a setup that large. We generally filter out SSDP, MDNS, Bonjour etc in corp environments as I've seen 50 misbehaving clients take down a 1 terabit line rate switch with enough control plane traffic thanks to MDNS. Though technically possible you would be in the minority with this type setup. The exception here would be things that do not need multicast discovery. For example I have all of my IP cameras on a firewall zone on an isolated switch (ethernet connection on the outside of my house, security problem!). The IPs are manually configured in C4 so no need for multicast, works great. If you put things that never need to talk to C4 on different VLANs, that's fine as well.
I saw you ran some pings as a test. 12 pings isn't enough and if you're running 1G or 10G you're not loading enough of the wire to see an issue. I would run 1000 pings and I would also increase the packet size to 1472, after applying the header that's the largest payload you can squeak through a 1500 byte mtu ethernet connection. If you run 100% clean with no loss I would say it's unlikely network is your issue. You will see loss over wireless, I would test from wired. You could still have multicast being blocked but that would be more difficult to test. You can use netcat if you have a unix system or if you have two laptops you can generate a multicast stream with VLC and some video file. Google will explain that process better that I am willing to here. I would also suspect that your issue with controls not working is not a multicast issue. Multicast is used by C4 for discovery. Once the remote device is discovered (Say an EA1) the communications are unicast for which ping is a good test. Anyone that doesn't believe me is free to use the above wireshark filters to find out for themselves.
I think it's unlikely you have a wired network issue.
I would look into the EA that runs director. I've had severe C4 latency issues with an IP driver (Yes, a Control 4 issued driver BTW) eating a lot of CPU and lagging out director. Identifying that driver and fixing an issue with it has completely resolved the issue. I spent a week on the phone with support on that one. Engaging your dealer is the best way to identify if something like that is causing the issue because they're going to have access to deeper troubleshooting tools that you don't.
You could also be having a spectrum issue with zigbee. It's sitting on the 2.4 band. Given that you have 11 APs, hopefully someone has told you or you know to turn off most or all of the 2.4ghz radios. There are only three non-overlapping channels in 2.4, given that there's better reach on 2.4 vs 5ghz, it would be difficult to not have channel overlap 3-4x in that setup. I would only use 5Ghz if possible and potentially only enable 2.4 on three APs at most. If you need more you should do a heatmap of your house and identify which APs have the most RF barrier between them and configure the overlapping channels there, using the attenuation of of your structure to your benefit, adjusting down power as needed. Just the SSID broadcast from two networks (user and guest) could eat something like 40% of the 2.4 ghz bandwidth if replicated on three APs overlapping each other...it would also trash zigbee pretty bad. If someone configured the ubnt gear for 40 or 80 mhz channels on 2.4 you will have similar issues as well. My recomendation would be to disable 2.4 altogether if possible and use strictly non-overlapping channels on 5ghz, I think with 40mhz channels you should be able to just make it.
Speaking of wireless, I would also get someone who is a drop dead expert on the ubiquiti gear or an expert with Airmagnet to look into the wireless, especially if the touchscreens are wireless. 802.11r/k are squirlley in a lot of client and AP chipsets, you may have stability issued on the T3s with roaming given the number of APs you have r/k/v enabled. Band steering can also create issues etc... There are other issues with fast roaming on cheap gear as it generally doesn't generate l2 forwarding table updates on a client roam. Controller based enterprise gear does this, UBNT might, however I don't know. My understanding is that the UBNT controller doesn't really handle traffic so I would expect not. Other solutions like Mist, Aerohive, and Ruckus unleashed have this sorted in a decentralized forwarding plane setup so perhaps UBNT has this as well. I'm also not sure how well autopower/auto channel works on ubnt, generally only Mist, Aruba, and Cisco have this actually working. You should probably use an analyzer to tune down the power on your APs to make a more microcell environment. I would get an expert on UBNT wireless as its very complicated and it's much more about the skeletons in the closet on each platform.
Actually, just looked before submitting and it seems the T3s are 2.4 ghz only. If you're running them on wifi, I would kill all but one of your APs and put a T3 right next to the active AP and see if that stabilizes the T3. If so you probably have channel overlap issues on 2.4ghz.
Good luck, hopefully this helps.
 

Finally installed. 
 

A few other potential sources of your problem are (1) the light tracking in your advanced lighting scenes may not be set correctly. This assume you are using Advanced Lighting Scenes and not simply programming a bunch of lights to trigger sequentially and (2) you have a weak zigbee mesh meaning you do not have enough zigbee devices, spaced correctly, to ensure a reliable zigbee mesh.
A good dealer will be able to remotely assess both of these potential issues.

A few other potential sources of your problem are (1) the light tracking in your advanced lighting scenes may not be set correctly. This assume you are using Advanced Lighting Scenes and not simply programming a bunch of lights to trigger sequentially and (2) you have a weak zigbee mesh meaning you do not have enough zigbee devices, spaced correctly, to ensure a reliable zigbee mesh.
A good dealer will be able to remotely assess both of these potential issues.

A few other potential sources of your problem are (1) the light tracking in your advanced lighting scenes may not be set correctly. This assume you are using Advanced Lighting Scenes and not simply programming a bunch of lights to trigger sequentially and (2) you have a weak zigbee mesh meaning you do not have enough zigbee devices, spaced correctly, to ensure a reliable zigbee mesh.
A good dealer will be able to remotely assess both of these potential issues.

Finally got around to getthing this fan installed/programmed.
fan connects via ip, and driver works as advertised, no fuss connect ip 2 way control for both fan (6 speed + reverse switch) and led attached light (dimmable)
my only complaint would be that the driver doesn't include button link connections so when you try to link them up to the keypad, you need to do this through programming instead of just making the binding in composer.

By far the BEST landscape lighting integration is the Luxor system by FX Luminaire, you can zone dim and control color with individually addressable fixtures and integration is seamless. If you limit the number of colored fixtures and mix them with non-color ones the cost is also very reasonable.   
https://www.fxl.com/products
 

11 APs? how much square footage over 10k? Get a couple Rukus cut that down a bit. But seriously if all of this is that ridiculous just separate c4,  create a vpn for c4 so when home on your 11 ap you can use c4 app as if on same network. 

Somewhat important piece of information and an example of why Trouble Shooting via a Forum is difficult at best and why on-site support in this case is needed. We don't know your full set-up, how its configured, etc.
As @msgreenfmentioned, move everything using those switch ports onto your Unifi switch. 
Also, your wife's situation is not unique, by any stretch of the imagination.  If she's using multiple computers and devices for her secure communication in the home then they obviously aren't that important.  Clients and friends I've got that need this level of security typically have a single computer on an isolated and wired network and a secondary mobile device just for their business communications.  That is a home computer and and work only computer, a primary mobile device and a secondary work only device.  

Given the investment is seams @TundraSonic has in C4, and the fact that his high security environment may restrict good support to his C4 setup for many years to come, I will say it again that it might be best for him to invest in a second firewall and simply separate the work network for his wife. Doing so will enable him to easily get the combined network/C4 support he might need. That said, I have never given my C4 dealer access to my network, including firewall or switches. I do simple management of my network myself and I have professional services monitoring all aspect of my network. In over 12 years, there has never been a network issue that we could not identify, isolate and resolve through monitoring and packet capture. One does not need C4 experience to ensure the network itself is functioning properly and not unintentionally restricting, blocking, or holding up traffic. My dealer gets access to C4 via a computer in my rack that I have to personally give him access to via teamviewer. Has always been solid.

Given the investment is seams @TundraSonic has in C4, and the fact that his high security environment may restrict good support to his C4 setup for many years to come, I will say it again that it might be best for him to invest in a second firewall and simply separate the work network for his wife. Doing so will enable him to easily get the combined network/C4 support he might need. That said, I have never given my C4 dealer access to my network, including firewall or switches. I do simple management of my network myself and I have professional services monitoring all aspect of my network. In over 12 years, there has never been a network issue that we could not identify, isolate and resolve through monitoring and packet capture. One does not need C4 experience to ensure the network itself is functioning properly and not unintentionally restricting, blocking, or holding up traffic. My dealer gets access to C4 via a computer in my rack that I have to personally give him access to via teamviewer. Has always been solid.

Thank you @Cyknight and Merry Christmas to all.

🙏 for 2021.

Thank you @Cyknight and Merry Christmas to all.

Merry Christmas all, and God bless.

Blessings to All.
 

For DIY’ers like many of the more active users on this forum, the key to success is knowing what activities a dealer can do that the DIY’er cannot do with Composer HE, and then establishing a good relationship with either your dealer or one of the remote dealers on this forum. If you are efficient with your dealers time, it is very affordable to work with a dealer for the few activities you need them for (ie. Firmware updates, adding devices, adding drivers, bindings, etc). You also need someone to train you on using Composer HE so you can learn what is possible with the system. Then spend time on this forum and sites like Drivercentral.io so you are familiar with the available drivers that might be useful in your system.
You will read some posts on this forum that suggest the DIY/Dealer have a love/hate relationship. It does not need to be. Much can be done with Composer HE and those activities that require Composer Pro/Dealer can be easily and affordably managed.

Use ComposerHE to do all your programming. For bindings and hardware modifications, you can use an online dealer, quick & reasonable.

My guess is the vast majority of In wall touch panels are PoE hence get this version released first and not hold it up for the line voltage version. For now, we are all waiting.