Hello, one thing I couldn't find is how SMB2 actually works out if a link is low or perceived to be slow (I was thinking it uses ICMP but then it could also just look at the times on received packets), 20ms is a key value though for latency and if it perceives a slow link then it sounds like it slows itself down. The links above are the ones I found after trawling for quite some time. We are testing with users and I will report back but I have seen dramatic differences. I have previously looked at prioritising TCP 445 in the traffic shaping but that didnt seem to make much difference. ... View more

Hello, this is an old question but I have been down extensive tests with SMB and Meraki transfers and found an interesting regedit change to do with "DirectoryCacheEntrySizeMax" which dramatically speeds up file transfer speeds from a pc. (Windows 10) ... View more