The V3’s are strange in that some have no issues with the connection and others do. There doesn’t seem to be any common denominator either. However, I’m pretty convinced that some routers just don’t work as well with V3’s, possibly just something in the way certain routers work with their band steering or something. .
I say this because I was one that had MAJOR problems with my first two V3’s but never with the V2’s. My issue was solved by replacing my router.
Let me explain. I had a really good AC2200 Tri-band router with 4 big antennas sticking out of it. I never had a signal issue with any of my 5 V2’s and Pan cams. One of my V2’s streams 24/7/365 on two wall mounted android tablets. My TV service is all streaming and I could even stream on 3 TV’s around the house simultaneously, including 4K along with tons of smart devices, computers, etc, without a skip. Anyway, I replaced that 24/7 V2 with a V3 and it would connect fine, but constantly drop to 0kbs and lose connection. It wouldn’t last for more than a few minutes befor slowing down and dropping connection. Tried a second V3 and had the exact same issue even though that one was even closer to the router. Even tried the V3 in the same room as the router.
The only other WiFi issue I had was our printer started also dropping offline a lot. I decided to change my router and bought an eero Pro mesh router with 2 beacons and magically, both of those same exact V3 cameras began working perfectly. I can sometimes go a week without the 24/7 feed dropping from the wall mounted Android tablets, and I think when they do, it’s just things going on with the tablets like updates and such. I now have 3 V3’s and 2 V2’s all working great.
I’m not suggesting that you go out and buy an erro or other new router, but I’m convinced based on my experience and several other posts on here that some routers just don’t play nice with the V3 for some reason.
One thing you may try is ungrouping. It may not help the V3, but when my wife used to group V2’s, It caused problems for us. That was over a year ago and several app versions ago so it may be okay now.