App freezes after joining #mvmf channel

[sandrade-dcl]

The app keeps completely freezed after joining the #mvmf channel. It seems something related to the number of joined members of the channel (#mvmf has 12K+ joined members) because it is not happening with the rest of the channels (few joined members).

Steps to repdroduce it (it only happens from build, not from Unity editor):

1. Be sure you're not joined into the #mvmf channel.
2. Go to CHANNEL BROWSER.
3. Click on the JOIN button of the #mvmf channel.
4. Notice how, after some seconds, the app freezes.
5. If you refresh you will see that the join was done successfully.

Notes

After debugging the problem from Unity editor, we cannot reproduce the issue from the editor neither we identified any possible cause. It worth it to debug from the kernel side and see what is happening after the join is done.