vte/libvte is extremely choppy because it's hard-capped to 40fps. all terminals based on it suffer from this, so I decided to make these quick n dirty patches for various vte versions that bump the cap up to 120fps
here's a 120fps video demostration https://streamable.com/j8i0n
also a 60fps clip on twitter if your browser can't handle 120 https://twitter.com/roriicon/status/1113186464332951559