My Mx master 3 is jittery,skipping and innaccurate when connected over bluetooth.
Luckily I bought the PC version which has the usb dongle.
It works fine with the dongle.
This makes no sense as I have an HP travel mouse that works fine over bluetooth.
I have an M1 Mac Mini which is on my desk, not more than 30cm away from my mouse pad.
A bit disappointing for such an expensive mouse.