Maybe this could help: https://blog.jetbrains.com/idea/2015/08/experimental-zero-la...

Here was a 3rd party analysis from 2015, showing a reduction in latency when editing XML files in IntelliJ IDEA from ~70ms with large jitter to 1.7ms with small jitter: https://pavelfatin.com/typing-with-pleasure/#summary

I wonder if it's turned on by default today, 5 years later.

Some other techniques: https://medium.com/@sergio.igwt/boosting-performance-of-inte...