Hello. It is a hardware limitation. Your graphics card cannot encode frames with hight larger than 2160px. After that, I updated the graphics card driver and the resolution returned to normal. Although the resolution has returned to normal, the generated video frame rate is only 20~30 FPS. P.S.: Wh...

System summary: Operating system: 64-bit Windows 7 SP1 CPU: Intel Xeon E3-1230 v2 Graphics card: AMD Radeon RX580, 2304 SP, 4 GB (graphics card driver version: Adrenalin 19.9.2) Action! Version: 4.21.5 Steps to reproduce the problem: 1. Set the resolution of the monitor to 2160*3840 (AMD super virtu...