Its a Synology NAS, all computers are physically connected *directly *to
the NAS via CAT7 with no intervening switches, therefore this problem *only
*happens working locally. We have 5 computers connected this way with the
other 4 not experiencing this.

I seriously doubt the problem is with a firewall or AV.

We can do these checks but would indicate anything that would force a
*change* in the actual path name as described above?