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these bandwidth limit errors are getting very annoying ,any other option besides larger blocksize?

Yeah. There's news.

Steem needs a bugfix. Update 0.19.1 will help. It's up for review and should be ready in a few days.

Most witnesses already updated, where are you? ;)

I'm not updating to an RC, since I don't have a backup server.
I'll wait for a stable release.

It's not an RC it is a real minor update with a hotfix. And you can disable your witness btw. while you upgrade ;)

And you can disable your witness btw. while you upgrade ;)

I'd have to.

Also, I don't have a fallback in case this isn't stable:

https://github.com/steemit/steem/releases/tag/v0.19.1rc1

Well the blocksize increase was a temporarily fix. So it will most likely bump down again. And welcomebot is not even using much ;)