I was able to improve the speed from 3 Tweets per minute to around 5 Tweets per second: https://gist.github.com/lucahammer/a4d1e957ec9e061e3cccafcbed599e16

If someone prefers it as a userscript: https://greasyfork.org/en/scripts/476062-tweetxer

#Twitter #XCorp #TweetXer
#Tampermonkey #Greasemonkey #Violentmonkey