Windows 11 CO-Release Build 22000.51 is out to Dev Channel

This has to be an error on your side, I can change from dark to light and back again pretty much instantly

What kind of graphics card do you have ?

Do you have the latest drivers installed ?

Not everything is just the Windows side of it your hardware might have a bottleneck you are unaware of or an accessory connected that is keeping your system busy.

If you could switch back to prior Windows would the problem go away ?

Only problem here is the CU will not install and I get an error and a 'try again' message. Basic Windows 11 is here but not the update that I hear adds parts that are missing in initial install.

None of my other Dev builds are installing at all.

This has to be an error on your side, I can change from dark to light and back again pretty much instantly

@SimonCole2,

I don't think so, I've seen the delay on 3 different machines now also on this one, even if not as severe as the other 2 older machines.

I'd blame it on the developers... 😉

Perhaps take a look with Dism; used incomplete command for example. Already specified the kb# of the CU (dated 6/25) that took the build to .51 going to Dev channel:

Cheers,