Ok.Not possible since standard EVR renderer wont support providing texture for MP GUI engine.A good and maybe cheap solution could be let users choose the offical customized renderer or the evr standard one released with the operating system.Basicly it means disabling AERO from Windows itself. Most likely ReClock is not able to get rid of the tearing, but who knows worth to try at least. On Windows Vista / 7 MP is always using v-sync from OS itself. Also nothing has changed regarding the v-sync (unless it is 1:2 fps / Hz matching, where EVR renderer tries to do slight correction presentation time based on the v-sync. Something that cannot be turned of).
The wierd stuff is often MP start play fine . Sometimes start with the stuttering .in this case ,with shift-1 information overlay, I can notice a lot of peaks in the red line that exceed the green line , if I pause the play and restart MP restart playing fine most of time.
Perhaps the solution could be check this peeks in the red line and try to put forward or backward the vsynch timing a little bit.
wait for few frames and repeat this control and so on.
I'm a c# developer, .Do you think could be possible for me try to recompile MP e try to debug this behavior?