Have you just updated Blitz3d at all? My game chugged like crazy with the last update and I had to go back to the previous version.
...The other thing is it just sounds like part of the card driver has been trashed or corrupted in some way. Full uninstall and clean install would be worth a try.
...The other thing is it just sounds like part of the card driver has been trashed or corrupted in some way. Full uninstall and clean install would be worth a try.