Huh. At a first glimpse, it seems new edge sync modes are pure magic when combined with Enhanced Sync. Old async mode introduced stutter when combined with it, but new modes seem to be ~entirely free of stutter when I limit to 85fps (for exact 85Hz) in Strange Brigade with both DX12 and Vulkan. It also seems to stay completely stable (= 0 tearing/stutter) until a frame time indeed is higher than refresh rate. Going to test it in DX11... Edit: In BFV it works worse with DX11 than with DX12, the former can stutter before GPU reaches 100%.