Particles missing on iOS

iPhone 5 with iOS8 installed. Most of the particle systems are fairly simple CPU particles though a few have GPU particle features. None render on the phone, though they do in the mobile preview with the setting to mobile/html5.

I’m not sure what the best approach to debugging this on the platform is - any pointers?

Some of them appeared. Also have issues with TextRender text sometimes appearing (depends on the package).

On 4.8 I ended up just doing full rebuilds and manually deploying ipa’s to the phone and this seems to work pretty consistently (even had audio through PlaySoundAtLocation on one tantalizing build…).

On 4.9 I haven’t seen any issues,