Regression in tuxracer games introduced with 7.02 is finally solved in this 7.5 release. Hopefully ttm in 7.6 >= will help in all those remaining texturing problem, for now i can expect proper performance only with 512x512 2D textures. planetpenguin-racer has these by default and work good, but extreme-tuxracer has 1024x1024 for backgrounds and i must downsize all them to 512x512 to be playable.
Also for EXA usage driconf option allow_large_textures may be "No" in ppracer (not needed for XAA!) for good framerate just for ending results on each level, but for extreme-tuxracer (with downsized textures) that MUST be on "No" if i want 10x beter performance.
So basicaly this problem is solved, but maybe i can get here some answers to get any clue why performance is at zero range when 1024x1024 >= textures are used? As i know r200 hardware supports even 2048x2048.