[Issue] Video service is currently not responsive

Using n6.0.7 on 3 macs (10.7 10.8 and 10.9) x32 and x64.
Everyday since N6 has been released. We saw that a couple times, but it’s pretty rare…
What type of video formats do you use ? What video cards ?
Would it be possible that it’s a QuickTime related problem ? And maybe more present on windows than osx ??
Also, we stick to eucontrol 3.1 where eucontrol needed. Crap dev since avid took over…
Not saying it’s not a problem but as long as some configs seem to be more problematic than others, I really wonder where it comes from…
Especially when you see that video in protools 10 works very good and is a total mess in protools 11 !!!