I think the problem is coming from the change you made to the virtual stage. Leave the Virtual Stage at its original resolution (1920x1080) and you’ll only need to zoom out, which results in less loss of quality.
video in watcher to projector to a virtual stage. Make the virtual stage 1920 x 1080 pxSpin the projector 90 degrees.In the projector turn OFF keep aspectchange zoom to ±55% and width to 178Use Get Stage Image of virtual stage to bring the rotated image in the correct orientation into my scenes.Best regards
Jean-François