The time it takes to export a Jitter animation depends of several factors:
The total duration of your animation. The longer your animation is the longer the export time will be.
The format you are exporting in. Some export formats are taking longer to export than others.
Exporting in Lottie is close to instantaneous.
When exporting in GIF, MP4 or WebM it will take 1s to export 1s of animation.
When exporting in Transparent ProRes or Transparent WebM it will take 2 minutes to start the export process then 5 to 10s to export 1s of animation.
The assets you have in your animation. If your animation includes video assets, they will slow down the export process, adding a 2× to 3× factor to your export duration.
Some examples:
Exporting a 30s animation in MP4, GIF or WebM will take ~30s.
Exporting a 30s animation that includes video assets in MP4 will take between 1 min and 2 mins.
Exporting a 30s animation in transparent WebM will take ~5min
Exporting a 30s animation that includes video assets in transparent WebM will take ~10min