UCSS generation > 100 sec

Wordpress LScache Plugin: UCSS generation > 100 sec

UCSS generation takes more then 30, 50, 90 or even 100 seconds today (and yesterday) where 2 ? 5 sec is normal (in my situation). Even / UCSS timeout / in some cases. Anything wrong on node9? The page I need help with: https://www.mmwb.nl sorry about the case, there was an overload on node 9 but should be stablized now please try again and see if you still hit any issue.