about:config
# prevent sleep/resume problems
storage.nfs_filesystem true
# less chatty
toolkit.telemetry.enabled false (when locked use Settings - Privacy - Firefox Data Collection)
browser.sessionstore.interval 120000
(
browser.cache.disk.enable false
browser.cache.memory.enable true
)
OR
(
# /homes is nfs, /home is local
browser.cache.disk.parent_directory /home/user/.cache/firefox
)
symlink ~/.cache/mozilla and ~/.mozilla/{profile}/storage to local
apt install profile-sync-daemon
Smarter when not wanting to deal with 1000 users profiles - but didnt work reliably for me