I found a solution, switched to 144hz in desktop, and capped the fps in games to 85 fps, this is the best solution to have a stable fps in all my games, and still have smoothness from the monitor. If i cap to 60fps i get massive headache, and i start to dizzy, when i move the mouse, because the pixels move too slow. So this is the kinda proper thing for me. And still don't get the CPU and GPU to get crazy hot because of thr +100fps like in battlefield 3. On 85 fps cap still doesn't have a massive flickering, it's acceptable.