Hey there!
As you can see here I am having somewhat the same issue. Have you tried running it on an AVD device? (Android simulator). For me, through the expo app, it works flawless every single time in AVD. On iOS physical device with expo custom, it works flawless. On iOS in production, flawless. Android device through expo 10% of the time. Android production 5% of the time.
What’s funny is - during the morning hours - on android through custom app it works 100% of the time. This morning during my testing it worked from 7AM CST-10:50AM CST. I wish I was making that up.
If I find a solution I will update my thread and this thread here.