I'd suggest not relying too much on those screens. Instead, if you're interested in monitoring the system, use a combination of Performance Monitor, Dynamic Management Objects and Extended Events. You'll get a much better and more accurate view of what is up with your systems.
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning