When I bought my laptop and installed Windows 8.1 64bit with all drivers found on Toshiba site, I played World of Tanks on low and got about 75-80 fps and L.A. Noire on max and got about 60 fps. After Windows 10 upgrade it worked the same but after upgrading the driver, I´m getting about 10-25 fps in both games... I tried reinstalling the drivers (used DDU and AMD Cleanup Utility to unistall), downgrading the drivers, disabling automatic windows updates, even reformatting the hard drive and reinstalling the system but I can´t get it to work properly. I did set the graphics to maximize performance in CCC. The Crimson drivers are not working and I´m pretty sure that after installing them, it made it worse. Please help me, i bought the laptop 8 months ago and was satisfied with everything but this is terrible. I expect that you can solve my problem in a short while because I´m trying to fix it for two months now. Thanks in advance.