Has anyone else been suffering issues when running this!? I have problems on the Toxin Refinery level of Ultimate Doom in that in using the Chaingun it gets so intensive on what I belive is the Brutal Doom version of Ultra Violence that it jerks freezes and even crashes back to D-Touch itself!? If anyone say got this tab either for Christmas or upon its release etc and has played for a while on the Ultra Violence setting with no issues, what if any changes did you make to the OpenGL setting or textures please!? Obviously I will if I have to, return to Vanilla Doom but for obvious reasons don't want to have to! Many thanks in advance but I do get the impression Brutal Doom may be just too Brutal for nvidia's newest device!?