Q Light Controller+

Hello,
I have a quite annoying issue with the show manager. When editing the show, I can perform one action, then QLC+ freezes for about 1-2 minutes. It will perform the action eventually. I couldn't really reproduce it with a new workspace, but I think it might be worse the more fixtures and functions are around. If I leave the show manager, everything works fine.
One time it crashed after 10 seconds while playing audio, the UI was frozen. I don't know if DMX output is produced since I program "dry" atm.
It freezes without any audio in the project too.
I experienced this on two systems, Windows 10 and Ubuntu 15.04 with QLC+ 4.10.2. Both systems run with SSD, so reading speed shouldn't be a problem I think.
The workspace I'm using is attached.

You have Sequences with infinite duration !
Saw it in FLDIM MÄBA_Haupt

That seemed to fix it. Thanks! Maybe infinite duration should be deactivated in show mode.
But is there a way of keeping functions running after the show is over? I couldn't find anything to do this in the documentary. If the show is over, all lights are out. If I change to another function and stop the show, there is a short periode of black which I'd like to avoid.

Edit: found it. Fade Out Infinite...