Workaround for now, you don't use V-Sync in standard runtime (in D3D runtimes work fine).
Strange, I'm on Win7 here with an ATI 4670 HD with the latest Cat and I don't have this issue...
Same problem here!!!!! I have an ATI video card, a brand new pc with windows 8. I tried everything from "running as windows xp" etc but the problem remains I though it had to do with win8..... If I just turn off the V-Synch the mmf2 runs perfectly. Btw is there any chance of an mmf2 update for windows8?
I have AMD Radeon HD 7750. The process remaining problem does not solved in MMF2 build 257.30.
It is happens if selected the V-Sync + standard runtime or selected the DirectX runtime(V-Sync not related).
Yves did you find solution of it?
No, I didn't find any solution yet...
Change your graphics drivers ASD, worked for me. Either upgrade or downgrade.
What version is your driver? I've updated the latest beta version 13.8 beta2.
I had similar issue I reported some time ago in different thread - also AMD graphic card 5600.