Therefore, a statement like "The last version worked fine, this one doesn't thus it's Adobe's fault" is meaningless, especially in light of the fact that it's working very well for others.
The most common cause for failures such as the one described here is a display driver / GPU combination that does not properly implement the very latest graphics operations, even though it advertises that it does. This is a very common situation, especially since GPU designers concentrate on making video games faster and more exciting, and less on making every function call work perfectly. Video games sell more video cards. Photoshop not so much.
I'm not saying that you're not right but maybe adobe could say then what graphic card works... i'm using a gainward Geforce 770GTX on an i7-3770k with 16gb of ram and running the latest drivers from nvidia, even tried the beta drivers, no difference... so what card etc. should i buy for it to work?