Found this in the YouTube comments and it worked for me!!! Only thing my light bar is not as bright any more... meh game is now playable. Only Rage crashes time to time, or full game exits sometimes I think it's ELS. We had same problem with GTA IV, soon as we got ELS game started crashing. But it's like drug you can't stop using it! If you have a (small) additional setting to make light bar bright again let me know. Well... hope I can help someone else here it is:
The CPU Vertical Sync method helped a lot. I have a Athlon x4 860K, 8GB RAM, and HD 5770. My graphical settings are DX10, 720p, FXAA off, 60% population density, 30% distance scaling, normal texture, very high shader, very high shadow, Ultra reflection, very high water, normal partials, sharp shadows, normal post FX, 16X anisotropic. Drops to around 30 trafficking, 40s + when not moving fast. Small spots will be half loaded for a second every now and then, and some street utilities (stop signs, etc) will pop up when I get close every now and then. Otherwise, helped a lot. :)