I'm observing choppy framerate in WinQuake with dgVoodoo - checking with Bandicam shows that the game seemingly runs above 60 FPS but the meter bounces a lot and the game is visually decidedly less smooth than 60 FPS. Tested with both D3D11 and D3D12 renderers on Nvidia GeForce RTX 2060 SUPER and Intel UHD Graphics (11th gen).