Using SF2 with the December patch, when I first installed it, I was getting the usual 15FPS on High graphics settings (I've an awesome comp here- 2.33Mhz, 8GB DDR2 RAM, 1TB HD, but an ATI graphics card with a stopgap driver...), so I went and installed the HDR mod, even though i wasn't totally sure how the new patch worked with DirectX 10, or if I even have DX10.
Anyways, the frame rates jumped to 20-22 for the graphics, which was noticeable, but not stellar, so I lowered my graphics settings, cursed at my video card a bit and soldiered on.
Then, when lining up a screenshot, I accidentally hit Shift+F-12 instead of Ctrl+F12. The result was staggering: Frame rates jumped to over 50, even on high graphics settings! The display was a bit darker, but it's SO worth it!
Anyways, I have no idea what Shift+F12 toggles, and after updating to the Feb. 2010 patch with no HDR, my frame rates are down at 10 to 14 (like on my old comp...), I was hoping to isolate what gave my system graphics afterburners and use that again. Anybody know what the Shift+F12 toggles on the HDR mod?