S! Brain Wave
Really unsure about your system specs? Pushing the line thats for sure according to all reports.
In Single Player SP try
-turning off sun glare
-minimizing graphics to get started
Massive Multi Player MMP
-turn chat off or increase scroll speed
-Promised land has a reallity patch which removes all text prompts
-Once again lower graphics quality
-Use large pic blocks or something
The thrill in RB is the duel not the graphics anyway. With the exception of Glide VS DD
I'd direct you to the newbie page where alot is explained but it is down right now.