Windows 11 wants to leave the screen on all the time with OLED

I have a fresh install of windows 11, though this was an issue with win10 too. I also have an OLED monitor.

I have to always turn the monitor off entirely when not using it unless I shut down the computer- otherwise, windows will leave the screen on, even when locked (and even if I initially sleep it completely. Maybe my cats bump the mouse in the evening and it wakes up forever)

With an OLED this contributes to pretty bad burn in. I tried telling it to turn the screen off after one minute, with no effect….

Any tips? I once setup some scripts to force sleep, but that really doesn’t seem the right solution here.

I do have windows hello enabled, but even disabling that doesn’t seem to help. It happens both on a lock screen and when I leave it alone on the desktop.

Thanks for any tips