We recently introduced a new redesigned functions feature for Construct 3. Check out that blog post in case you missed it. We have a few more things we wanted t...
We regularly test on mobile and the performance is generally great. As far as we are aware the vast majority of users are exporting to Android just fine. If you experience any crashes or performance issues you can file an issue about it and we'll look in to it - but as far as we can tell right now things are working fine.