Sluggish / unstable / stuck Bluetooth input with Universal control and no scrolling after sleep

Hey everyone! So I have a 12400 / 64GB / RX6600 / Fenvi 1200M WiFi/BT card and Monterey 12.7.4 as MacPro7,1.

Right now I have the following issues with my magic keyboard & mouse:

- With Universal Control towards a Sonoma M1 MacBook Air: I have to be constantly pushing towards the edge of the screen until it finally "breaks off" the screen and moves to the MacBook, but the performance is so-so. Moving the mouse around and typing works but with the keyboard it happens that a random key when I'm typing gets stuck like thisssssssssssssssssssssssssssssssssssssssss (even worse if it's backspace lol) for like 2-4 seconds. Happens randomly, but frequently. Both machines are close to each other, WiFi with good signal and no obstructions between both, except monitor and such.

- With Sleep: When the machine comes back from sleep, the mouse and keyboard reconnect but mouse scrolling is broken, and it doesn't work until I force bluetooth off/on again. After that it works well again.

What could be wrong? I already followed the "Fix sleep" section in the Dortania guide (which is very outdated btw), I also did my USB mapping with UTBMap.kext.

Any ideas welcome!

submitted by /u/darkguy2008
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