I have got it mostly working now after a bunch of re-installs and trimming the fat in my rageconfig.
It pretty much runs at a solid 60fps but UNLESS I jump on the buggy to ride it. Frame rate instantly goes down to 30. Looking at the exact same vista, not moving whatsoever, gives me 60 fps standing, 30fps sitting on the buggy. (measured with fraps)
Is anybody experiencing something similar?
Just for shits and giggles here is my config:
com_AllowConsole 1
com_SkipIntroVideo 1
fc_maxcachememoryMB 1024
vt_usecudatranscode 2
vt_pageimagesizeuniquediffuseonly2 8192
vt_pageimagesizeuniquediffuseonly 8192
vt_pageimagesizeunique 8192
vt_pageimagesizevmtr 8192
vt_maxaniso 4
vt_restart
image_anisotropy 4
vt_minlod -1
image_usecompression 0
Launch options:
+fc_maxcachememoryMB 1024 +cvaradd g_fov 20 +set com_skipIntroVideo 1
This is on a 580 1.5GB, 990x, 12gb