I've just setup a brand new Mac Mini Server (8 GB RAM, fastest processor for this model) with FM14 and everything is running smoothly as expected. There are 25 concurrent users in average, working on 9 files. In total we have around 150 GB of data.
There is one file which holds 110 GB of old data. At the moment of this screenshot there was a backup running but this big file was not included in the backup.
Nobody has noticed (or reported) a speed decrease, everything is working normally.
Now see this image:
Can somebody tell me what possibly could happen here?, was it just a hiccup?.