My Razer Basilisk X Hyperspeed mouse rapidly connects and disconnects. Looking at the log it seems that it is being misidentified as a keyboard though I do not know if that is the cause.
There were issues with bluetooth with the 5.15.x kernels. The bug report is here: https://bugzilla.opensuse.org/show_bug.cgi?id=1193124
For me the 5.15.10 kernel fixed the issues. Which kernel are you using?