I`m having the same problem,the only way around it for me is to have silent mode enabled at all times,otherwise i cant leave the pc running and come back later or it will crash everytime i try to open something,i have come across this same issue on numerous forums,personally i think the software has major issues,what exactly can it be doing in background tasks that uses all resources available?im not happy at all having to run it in silent mode all the time,i have 222 days left on my subscription and i cant see myself using it for much longer,complete waste of time and money for me.
[edit: Clarify subject.]