Event viewer says this:
Faulting application name: et.exe, version: 0.0.0.0, time stamp: 0x445f5790
Faulting module name: opengl32.DLL, version: 6.1.7600.16385, time stamp: 0x4a5bdadb
Exception code: 0xc0000005
Fault offset: 0x0000416c
Faulting process id: 0x430
Faulting application start time: 0x01cf09e574db71a3
Faulting application path: D:\Program Files (x86)\Wolfenstein - Enemy Territory\et.exe
Faulting module path: C:\Windows\system32\opengl32.DLL
It seems to be having its issue with OpenGL. however, stock wolfenstein does not have this problem, but it lags really bad.
I tried setting everything to lowest settings like Kiba suggested (on stock), but now OpenGL fails to load on startup and says that it isn't installed, I disabled OpenGL extensions via to options menu, surely that wouldn't be an option if it breaks the game?
Just want to add that I can remember playing ET on the FA servers 10 years ago, and it was a blast!