There are a few serious problems involving third parties which are currently hampering development of Construct 2 desktop games.
I'm sure I speak for all the desktop developers when I say we'd be thrilled if you could spend a moment of your time and help bring attention to these issues.
1. NW.js does not work on mac and linux for large projects
Yep, that's right, the latest versions of NW.js have a bug that prevents projects with lots of images (so, any big project) from running on mac and linux. While 10.5 still works, there are unfortunately a lot of other problems with 10.5 and bugfixes for version 10.5 aren't going to happen.
To help out with this issue, leave a comment (or, if you're feeling generous, a bounty) here.
2. Chrome runs like absolute rubbish below 60fps
For some reason, any time a C2 game dips below 60fps in Chrome, bad things start happening. 59fps is literally unplayable in a fast-paced action game like Airscape.
This may or may not be more of an issue on fillrate intensive games, more testing needs to be done here.
If this issue was fixed it would bring an 100% increase in effective performance in C2 games, as anything from 30-60fps should be perfectly playable.
To help out with this issue, star/comment on the chrome bug report here.
Again, thanks for your help, it's very much appreciated.
Daniel