\Steam\SteamApps\common\RAGE\base\rageconfig.cfg

vt_pageimagesizeuniquediffuseonly2 8192
vt_pageimagesizeuniquediffuseonly 8192
vt_pageimagesizeunique 8192
vt_pageimagesizevmtr 8192
vt_restart
vt_maxaniso 16
image_anisotropy 16


Launch Parameters (Steam App Properties -> Launch Parameters):

+set com_skipIntroVideo 1  +cvaradd g_fov 85 +r_swapInterval 1  +vt_maxPPF 16