This is my high end configuration of my Crysis autoexec.
The base of this autoexec is the ExtremeQualityMod from Xigmatek. (https://www.mediafire.com/?dlb89ekeigzw8)
But the Original is unusable. I dont have a Nasa PC like Xigmatek.
I tested this autoexec on a: Nvidia RTX 3080, i7-9700KF, 32 GB RAM and i get between 60-100 fps in 3440:1440
Picture comparison slider behind the links.
Installation:
Just put the autoexec.cfg into your "\Crysis" folder.
I highly recommend my autoexec in combination with the "Crysis HD Textures 2018" mod. I did not lose any FPS when using these textures.