Just to add some numbers, I also get those horrid looking textures in 1.5
If i set everything to normal with low post processing, i get normal textures, for a little while, but it will crash either the first or second time it loads a mission/map.
at least i can play it a little
dont remember power supply, i think its 550, its either that or higher.
e6600 Core 2 Duo
XFX 8800GTX
Intel 965P chipset
X-fi fatality
2 gig 800mhz corsair ram
2x 250 gig seagate sata II drives (7200 rpm i think) raid-0 striped.
Windows Vista home premium x64 =(=(=(