Did you see my post from 8:50 am today? I didn't even remember setting some of the cameras for H264+ or H265 but when I set them all for H264 it was the end of the problems.
Yes, saw that. Mine are all set to h.264. I found one that I'd accidentally left on 265 on the substream and fixed that last night - so who knows... maybe that's all it took? I'm on a 4th gen i7, which apparently can't take advantage of the h265 protocol - so I tried to get them all to 264.
For the record, everything was great up until about 10 days ago (give or take a week). Nothing changed on my dedicated machine.