I'm playing on a Dell Studio 1558
- core i5 M520 @ 2.4 GHz
- ATI Mobility Radeon HD 5470
- 4 GB of RAM
- Windows 7
For some games sooner than others, but for most games I play (Arma 2, Tribes Ascend, Battlefield BC2) FPS starts out playable at 20-30 but then starts dropping over time to an unplayable level (10-15). For Arma 2 it can take like an hour but for Tribes (and presumably other UE games) it only takes a few minutes.
I'm suspecting it's the crappy ancient Dell supplied ATI display drivers having problems with keeping the right stuff in video memory or something like that. Since the FPS starts out fine I'm hopeful this is actually fixable by getting my drivers set right, question is how?
Are there ATI mobility drivers out there that are actually up to date and usable on this Dell?
Has anyone ever experienced or read about similar issues? Any sites or forums on laptop gaming advice you can recommend? I'm finding it hard to come up with good results on google and elsewhere.