Originally posted by Snipe:

unlike what martin said, it has nothing to do with your drivers.

the game is just unoptimized.

Which is almost exactly WHAT i SAID.

The game isn't updated to use the 3080 series or is not optimised is saying the same thing.

What I would suggest to the OP is to check their temperatures, see if their 3080 is defaulting to standard fan speeds, which might be causing the gpu to overheat and thus cause lowered fps rates. There's been a few posts about issues with background gpu softwares resetting everytime they loaded the game. Also happens with other games.

Those saying they aren't having any issues with the same card, might also state how they're setup, if they had any issues when first running etc. It could be a specific manufacture difference or set of drivers. Could be they use a different 3rd party software or bios to setup fan speeds etc.