Can you replicate following:
In a loaded project, all my Effect plugins which do show the signal graphically are completely out of sync (for me it is ~1/4 bar).
I have attached a video showing various plugins all having the delay in somparison to the sound I hear and also to the Cubase meter.
Windows 10, C11, RTX2060, WQHD monitor, HiDPI yes
In the video you can see a clap on the channel, which is displayed delayed by ~1/4 bar in the respective insert plugins
Update: Just checked, seems to be the same issue in 10.5.20