Thank you for your suggestions.
I have set the video quality to low and experienced no difference.
I can confirm that MPV standalone picks d3d11:
[vo/gpu] Probing for best GPU context.
[vo/gpu/d3d11] Initializing GPU context ‘d3d11’
[vo/gpu/d3d11] Using Direct3D 11 feature level 12_1
[vo/gpu/d3d11] Device Name: NVIDIA GeForce RTX 2070
The G-sync monitor and the TV display both are changing to 24p when playing the file.
I have prepared a couple video clips to illustrate the difference:
Desktop Monitor set as primary display and changed to 24fps:
Motion is smooth as expected.
TV Monitor set as primary display and changed to 24fps:
Constant stuttering. (But no apparent dropped/mistimed frames like you saw in the log)
Let me know if you have any other suggestions.
Do you know if the Plex for Windows app will also allow a switch to d3d11 gpu-context in a future version?