skorokithakis
commented
1 year ago I've recorded a video of how slow the app sometimes gets, compared to the site. It seems to be transient, but can sometimes persist for many minutes, with everything taking 3-5 seconds to load:
https://user-images.githubusercontent.com/23648/216867724-d4e45223-870a-40f6-9514-591052e493bc.mp4
Describe the bug
The mobile app on Android (a Xiaomi Poco F4) is extremely slow to network. This isn't a network issue, the website is basically immediately responsive, while the app might take 2-3 seconds on every API call. Sometimes I switch between site and app multiple times in one session to compare, and the app always has terrible lag while the site is always very snappy.
This happens on any WiFi network I'm on (mine or others'), and even on mobile data.
To Reproduce
Reproduction is hard, as I assume it only happens on specific phones.
Smartphone (please complete the following information):
Additional context
This is a particularly insidious problem, as it only happens to some people. Unfortunately I can't debug, as it's not a phone network issue, and doesn't seem to be CPU-related as well. I suspect that the app is trying IPv6 first and timing out, or something similar.