SSD Cache being hammered (600TBW in 50 days)

[rotcrack]

I'm new to unraid (on 6.9.2) and have been having a great time, running the usual Plex setup, with it until I took a look at my disk stats the other day which shows:

 

Naturally this has scared me a bit so went to investigate and saw regular 700+ MB/s reads/writes on my cache. By running 

iotop -oa

 

I could see the process that was using the disk IO which turns out to be about 8 processes hammering the SSD named:

 /usr/local/sbin/shfs /mnt/user -disks 3 -o noatime,allow_other -o remember=0 

 

Any ideas what is causing this and how I can fix it? Thanks!

[Squid]

https://forums.unraid.net/bug-reports/stable-releases/683-unnecessary-overwriting-of-json-files-in-dockerimg-every-5-seconds-r1079/?do=getNewComment&d=2&id=1079