comparto por aquí este post de reddit para subir los fps por si alguien lo quiere probar y comentar sus impresiones:
Hello! I'm here to tell you all a very simple, working fps boost that has worked for everyone I've tested with so far.
What you do is simply this; when you are connected to a server, write "r_flushlod" in the console. That's it! Enjoy your increased fps.
Things to take note of;
You have to be on a map for it to work, you cannot write it in the lobby and then go on a server.
If you tab out and in again, it will go back to normal and you have to write it again.
Don't write it two times in a row without tabbing inbetween or your game may crash.
Here's some screenshots showing the difference in look and fps:
Mirage A site
Before: https://i.imgur.com/gr7LDXb.jpg
After: https://i.imgur.com/j8qLcAn.jpg
+27 fps
Train A site
Before: https://i.imgur.com/lIN1UuG.jpg
After: https://i.imgur.com/yrct6vv.jpg
+18 fps
Inferno mid
Before: https://i.imgur.com/ujdOvsJ.jpg
After: https://i.imgur.com/xwT9q7G.jpg
+26 fps
So for me, it generally gives me a boost of 20-30 fps. Some friends reported a boost of +50 fps, so how big of a boost you get depends on your system.
TLDR; write "r_flushlod" in your console for awesome fps boost while removing some lightning/shadows.