I’ve been running 7 clients on Windows 11 for the past month and a half, and have experienced zero issues.
As for the “slideshow” you’re experiencing on the non-active client, which GPU do you have? Nvidia has a setting to limit the FPS of background programs to give the foreground one more performance. Make sure it’s turned off for Eve if you’re viewing multiple clients at the same time.
Another solution is to change the Preset Interval setting in the client itself:
I can’t remember which of the two options has an affect on the background FPS limit issue, so toggle it and see.
You can also try turning off Game Mode in Windows settings (also on Windows 10):
