I tried all possible combinations last night, and let's say i find one that works.
D3D9 (shader), first v-sync off, assisted vsync on, hardware cursors on, slow frontend workaround on.
Rope is not on 100% like with unchecked both vsyncs, but let's say it's on 70!
Laggs and freezes are reducted, but not entirely gone. While playin Big RR, noticed blury screen on the top of the monitor. Kinda f@#!ed up, but it's ok, can get used to it.
Just don't want to go back and rope on 50% again.
Hope you all find configurations that suits you the best.
Cheers!