I don't think it's anything to do with Construct 2. AFAIK games run smoothly on other platforms, so it sounds like a node-webkit issue.
Thanks for the quick response. I also don't think it's a problem with Construct2 itself. But is there an alternative export for getting an executable since node-webkit is the only way at the moment as far as I can see?
The freezing is not a huge concern/problem at the moment, but releasing a game in this state is not very desirable.
Edit: After searching a bit more I stumbled upon this post about node-webkit and occasional freezes, might be related? Apparently I cant post urls but I found it on Github: Roger-wang / Node-webkit. The issues title is: NW would freeze occasionally #1363
The issue was closed since it didnt seem related to node-webkit but with js engine's (v8) garbage collection.
This is beyond my skillset/knowledge so I don't know if this is related at all but maybe its usefull to someone here.. Is this something that Construct2 uses? This freezing problem is haunting me at the moment.