My explorer.exe on WIndows 10 also need regular killing and restarting, though not because of the Start Menu which continues to work fine (so far)... my explorer.exe leaks memory and generally doesn't last more than 2-3 days because it's consumed all 16GB of the available RAM. (Probably it isn't the Windows exe itself, but some other add-on which is leaking, but I haven't found out which one(s) yet.) When I get a moment I'll be writing myself a little utility to automatically kill and restart explorer.exe.