For further reference and for anyone coming here: you have to disable GPU profiling since it's not disabled by default ( Android Studio 2.1 Preview 4 ).You find the button in 'Monitors' section (check out the image below)
Seems like it's latest Android Studio bug.Older versions don't have this issue.See this link
The described behavior was fixed in the latest SDK update 1.4 Beta (Build AI-141.2202261).