Recently upgraded to the latest AMD drivers to enable me to play one of the latest FPS. Seems that I may have to restore previous drivers or I will risk getting more screen locks. Want to finish the FPS first tho.
Before I had my GTL problems I took a NVidia driver update and had similar problem so I restored to previous drivers and solved problem.
I was playing with some in game settings the other day and found that if I enabled trackside characters I would get lock ups/freezes especially when passing the pitlane. This is the only time I have ever experienced lock ups and disabling track characters again solved the problem. Might be worth experimenting with a few in game options as your new drivers might be conflicting with something.