Any idea why Spacebar / Playback randomly stops working??

[volkgti90]

Ever since i upgraded to PT11 i have had this problem no matter what version I'm running (11.2.1, 11.2.2 etc). I use PT everyday for work and work with short video clips (average 2 to 6 seconds long) as I build sound design for online video games. The problem I'm having is every 10 minutes or sooner, the spacebar just stops responding when i try to playback mid session. The play button and stop button will just flash and nothing will happen. There are only two work arounds i have found, with one only working 50% of the time. First, if i hit return and go back to the start of the session, the spacebar will 50% of the time start working again. The other solution is i have to close Pro Tools and reopen to get the function back. This is really frustrating and definitely interrupts my workflow. I have tried multiple different video formats to try and cure the problem and nothing seems to work.. Any info would be more then appreciated. Thanks

Computers used:

Macbook Pro 13'' i5 2.9ghz 8gb ram - PT11 11.2.1
Macbook Pro 15" i7 2.6ghz 16gb ram - PT11 11.2.1