OK, updated specs, save the 3080. The issues I'm having with all FPS games that I've tried so far are both major stuttering and also micro-stutters, as in I'm moving and I'll stop for 1/10 of a second or slightly longer and it will happen over and over again. Sometimes it's not as bad, but the micro stutters are just as bad. Sure I could lower the settings and I'm sure that would work, but I had no problem running BF1 getting, honestly, I don't remember for sure, but it had to be around 150 FPS or so, but no stutters at all in any game. In BF4, I could set the resolution to 200% and get 200 FPS+. This is all on the 2080.
On the 3080, the exact same things would happen, which I started with when I noticed problems. I got higher framerates, but not as high as they should be according to
GPUCHECK.COM comparing the 2080 vs the 3080 and my 3080, which is a GIGABYTE GeForce RTX 3080 VISION OC doesn't even measure up to the low end on that site. I know my RAM might take away 10 FPS max, but that's it. According gpucheck.com, this 3080 gets sometimes 100 FPS less in games, like Warzone. I thought it strange that I was only getting like 25 FPS in Warzone. That and the same stuttering and micro stutters in games. I can fire and be in one spot and then suddenly be in another spot or get killed and it's not the server. I tried dozens of games on both drivers on both the 3080 and then again when I put the 2080 back in. I thought the 3080 was bad, but now I think it's a driver issue.
I'd get frame drops too. I wish I ran HWiNFO64, but, well I'm having other issues too and I know enough that something is wrong and this smacks of a driver issue, but I just don't understand why DDU would cause this. I've used it for years and this has never happened before, however, I have had an issue where I uninstalled a driver, a game-ready driver, and used DDU, and then tried an Nvidia Studio Driver and it didn't recognize my GPU. I had to download an altered driver from guru3d.com for it to work, then after that, it was fine. I don't use DDU anymore unless I get a new GPU, so that's why I used it. I don't think I even needed to change drivers, because they use the same driver for both GPUs, but I've always done that in the past and did that this time too. This time I'm going to try a variety of drivers. As I said, I'll format if I have to, but I don't want to. I went to use a restore point only to find all my restore points were gone. No, I hadn't been infected, but I did upgrade Windows to a big version number which if I recall you can't restore back to unless you made a backup, which the one I have is old. Anyway, I hope this helps you understand what's going on a little more.