I have successfully mounted my NAS automatically at boot using fstab, however I am noticing that if I modify the files on the NAS from another machine(windows), the linux machine network mounts do not update.  Is there a way to force the mount to update or check for differences in a time period or is this a limitation of using mounts.  If this is not possible can you recommend a different method, this is used as plex media server with all of media stored on NAS.Thanks in advance for time and assistance.
NAS attached with fstab
fstab;cifs;nas