Whenever my group chat is remotely active, it gets locked up and I will sit there not being able to send it receive any texts in *just the group chat* for ages. This has only been getting worse for years over different phones.
I have tried all your troubleshooting tips of restarting, deleting caches, resetting networks, etc. I will not private message you. I have an S22 Ultra right now but it has nothing to do with my model.