On a Win10 machine (PsychoPy v2021.2.3) with 2 screens I try to do an animation on both screens. On one window I use waitBlanking=True to keep track of the time, on the other waitBlanking=False to not disturb the time tracking of the other screen.
Problem is animation runs only smooth when running on one screen at a time.
screen0 or screen1 animation: does run smooth
screen0 and screen2 animation: does not run smooth
The waitBlanking attribute does not make any notable difference. I run the routine in Windows realtime mode.
Is the onboard Intel graphics chip the problem?
(Win10 64 bit Enterprise, IntelCore i7-8700 cpu 3.19GHz, 16GB RAM, Onboard Intel UHD Graphics 630, 2 HD monitors, Python 3.6.6, OpenGL version: 4.5.0 )