Of course. I mean this doesn't come as a surprise, as others have already said, Mastodon is not designed to handle hundreds of thousands of users and scale up, hence why smaller volunteers are frequently running into issues with such a low amount of users.

Mastodon is still a solution pretending to search for a problem, already reminding us of the failure of federated social networks in the long term and eventually withering away and re-centralizing with larger instances.