Understandable. This shouldn't be a problem no longer. We are planning on upgrading our Workstations, and the Testunitcame in yesterday, so i benchmarked the new station with both P2000 and P4000 on the newest drivers, no problems there. In the meanwhile I will roll back on 361.91. Thanks for the help anyway!
@GregLuckett Standard settings, but I've also tried verious other settings like maximum performance instead of saving power. But I haven't tried what Wolfgang said yet, I think that might be the solution.