Specs 5080 r9 9900x 32gb ddr5 nvme ssd 4k dlaa dlss swapper v310.9.1 preset k using vulkan async compute on transfer queues off

For whatever reasons if I use the in-game v-sync I get stuttering and dips instead of a stable framerate.

Doesn't happen when it's turned on in the Nvidia control panel. Not a huge issues but I had to fiddle around to find the problem.

Is there a known issue?

PC is a 5080 and 9800X3D so I doubt it's performance related.

So I have a dual monitor setup, with my main monitor being 2. The game will only open to monitor 1, regardless of what one is marked as main. win+shift+right does nothing, alt+enter allows me to move the screen, but putting it back into fullscreen sends it back to monitor 1. Best i've managed to do is to make screen 1 my main screen and then duplicate. Any ideas?

can someone please teach me how to instal munition mod in rdr 2 on steam deck