UrT 4.2 by FrozenSand which is based on Quake3 engine has performance issues with AMD Graphics Hardware in my opinion. I experience this with ATI Mobility Radeon HD5650.
One solution to get better FPS-rate is to rename the game-executable to Quake3.exe. Doing this, FPS is improved by around 20%.
Is it possible for AMD drivers team to do some optimizations in upcomimg drivers for this game ?