Ubuntu 20.04.4 LTS
Brave Version 1.37.111 Chromium: 100.0.4896.79 (Official Build) (64-bit)
It takes at least 30 secs for Brave to start.
Opening a link from (for instance) email, also takes about the same time.
I’ve cleared the browsing history/cache/images
I’ve reinstalled Brave from scratch
I’ve disabled all extensions