Trouble with bluetooth devices
My Apple bluetooth mouse and keyboard both keep breaking connectivity for a few seconds and then connect again -all the time .I have checked how to solve it ,so I went to library > preferences >deleted the two bluetooth plist files ,turned off the computer for several minutes then booted up .Now the same thing is happenning but if go to preferences again there are no plists .Any help would be appreciated .I can use them but it would be nice to get back to normal.
My imac is running Catalina ,it is a 2.9 GHz quad core i5 from 2012