Upgraded our iMac awhile back and now I have an issue with my Magic Mouse 2, sometimes when I turn on pc, mouse won’t work, restart it and it’s fine, if the pc goes to sleep and you wake it, mouse won’t scroll, to fix this you have to turn mouse off and back on. Apple knows of this now almost as soon as people upgraded, have they done a fix yet, no, will they, you never know, just gets old so I just leave pc on with only screen saver which our cat won’t leave alone…..