You can run your own private relay easily, it might help.
I have been running one for a year now and those issues seemed to improve somewhat.
Discussion
Bookmarked
This platform Start9 also lets your run your own bitcoin core node, Lightning node, self hosted email, file server, nostr relay, VPN to home tunnel, self hosted Simplex Messenger relays and Matrix chat instances.
I have been using it for a year and its pretty much set it and forget it for Bitcoin and Nostr relay!