That's probably because you have your graphics settings set to use Unicode character space. Try lowering your setting to ASCII, or Latin-1 if you're in west Europe.
For those with embedded graphics it may even be necessary to drop non-alphanumeric chars.
Thanks! I've found a way to reduce the system requirement some more by switching from ASCII to 5-bit Murray code. Qwitzatteracht is drawing less than 10 watts now at a buttery smooth 50fps!
I have plans to go full morse to get it to run on my smartwatch.