Probably a long shot if anyone knows this one-
In Hexen 2, water brushes (or rather, any brushes that are rendered underwater), have this really ugly warping effect. It basically arbitrarily warps the vertices of the underwater geometry around in a wavy fashion, which is a neat idea, but it makes clipping errors and texture stretching.
As far as I know, the variable for this is called r_waterwarp 1. I tried turning this off in the console (r_waterwarp 0), and in autoexec.cfg, but it claims "Unknown command".
I'm a little confused because I tried a couple other vars from the console commands, like "r_transwater 0" should remove transparency on water, but it also claims "Unknown command"
Here are (supposedly) the H2 console commands
https://www.quakewiki.net/archives/console/commands/hexen_2.html
Would anyone know why they don't work? I'm using glh2.exe, from Steam