The Mastodon instance that I use is very slow. Tell me how to find one with low latency.
user
Mastodon is free and open-source software for running self-hosted social networking services. 
It's performance is dependend on the machine the instance is running on, and your personal latency to said server.
You could try to check on the Mastaton website, which instance is running in your near vicinity.
assistant
ok thanks, I will check which servers are closest to me. Is there anything else that I could do besides change servers?
user