Okay i thought I would give this Bar Edit a shot. (AMD A10 5750m, R9 M290x) Success (Or limited success). I followed the instructions, So Bus.0 Dev.24 Fct.3. Coordinates OC/ODC I have edited bits 9 & 10 to 0. Leaving everything else default. And Coordinates 08/0A8 i edit bits 30 & 31 to 0. Battlefield 4 performance has increased a lot. (BTW I tried this fix before with limited success. Last night i downloaded driverSweeper for graphics cards and completely wiped my AMD drivers (In Safe mode). Re-downloaded the drivers and here i am. So maybe that also contributed). Anyway. On to the bad bit. When i shut down/restart my laptop my laptop freezes and i have to hold the power button to turn it off. Needless to say this is quite damaging. Please help. PS. My bar Edit coord 0C/ODC is named 00A75737. Different to that of the tutorials (00A75734). Thanks for reading.