MadSpy - thanks for the older hardware test. My biggest concern with this project is people playing on 'average' hardware - and a core2duo isn't that old....!!
One thing I'm considering is reducing the default window size and then giving the player the option to up-scale if they think their hardware can cope. Presently the game is 1280x720 with Full Screen Scaling : Low Quality; but perhaps I might be better off starting with something like 960x540 or even smaller... and then you can just drag the window to increase the viewing area or maybe I could add a menu option as well....
Anyone any alternative suggestions? I suspect GPU fillrate is the culprit as the physics engine is hardly tested.