Last week we speeded up Browserslist by cleaning and reviewing caches system. For some people, it accelerated 10x: from 2.5 s → 0.2 s.
The changes were released in version 4.24.4.
https://github.com/browserslist/browserslist/pull/864
https://github.com/browserslist/browserslist/pull/862
https://github.com/browserslist/browserslist/commit/5b11b68ce6064fa8d1f91173ea1d66ab01032a5e