Game only crashes with epics?

Finally found my first ourano in a while, so I got all excited.
Tried clicking it and other stuff on the map after, but game went unresponsive, so I restart.
Game doesnt load for a good 10 minutes (on both phones) and ourano is gone after.
Not 20 minutes later the exact same thing happens with a raja…

Now this was already the 6th time this happened, and all 6 were fuse epics, it never happened with commons, rares, or filler epics.
Besides the intense feelings of frustration, this pattern does seem a bit unlikely…

Does this happen to more people or am I just cursed or something?