It's nice to know I'm not alone. This has to be a bug of some sort which apparently only affects a small subset of users and it does appear to be a BI 5 problem. My other install is still version 4 and works fine, although my problems didn't start until after I upgraded the PC, but maybe it has noth...

I've used Blue Iris for years and recently moved it to a newer PC I assembled myself (an i9-9900bk, Gigabyte Z390 Designare motherboard, 32gb, Nvidia 1080 graphics) running Windows 10 Pro. I'm up to 26 cameras so my older Dell couldn't keep up even with an average frame rate of 7fps. I never had thi...