PWAs with Lemmy 0.18 instances very crashy on Android/Fenix fork

Inb4 I know I have an old phone with low storage and old Android 9 and a slightly outdated Fenix fork (IceRaven/Fenix 112) with a bunch of extensions and the problem could be in any of these. Just wanna know if it’s definitely on my end or maybe not. Because I never have this kind of problems with any other web site....