dota 2 runs at 60-100fps with the original lenovo 307.64 drivers but with terrible flickering chat and other graphical bugs. I have tried the newers drivers 314.14 and the fps drops to 30-50fps on the same exact settings. Sli is enabled and the gpu usage is about half for each gpu on msi afterburner. The graphical bugs are gone, although sometimes autoattacks and some spell homing animations do not render at all and are completely not visible. I also tried 314.21 (tomb raider) drivers and it's the same as 314.14.