Thanks @soy_titooo
Well - I did a complete reinstall on the Finnish server - but the problem was still there.
Yesterday I read in :
Saw that they were posting about mergerfs it was buggy, or at least the performance was bad.
So I have for now - tried to roll back to mergerfs 2.25 and havent seen any issues so far.
Still testing and keeping an eye on this 
.
Want to try the latest though, but had some minor questions for Ani . Seems like there are double options in his service file as I can see . Was just curious if that is a mistake or not.
I tried to run with his options on 2.25 but the service wouldnt start.
I will run it on a test server later tonight