Does it work on steam deck ? Are there different color options? Palletes?

is there a way to fix this?

So I see a lot of people having framerates caused by vsync problems and monitor rates and whatever else, but mine is... weird? The game runs fine, unless I ever die. Once I die, the framerate noticeably dips during the dithered fade-out, and from then on the whole thing runs like molasses about 90% of the time, interspersed with seemingly random and very brief spurts of normal or maybe even overcompensating framerate spiking before dipping back down again. This stops if I close and reload the entire game....

when i try to take a screenshot, steam don't take it, someone can help me?

So I decided to replay this game again for the Achievements and the frame rate is unbearably slow. Can I fix this or is the game ♥♥♥♥♥♥?