The mystery of the slow file copy from the fast computer

NedPyle What are your thoughts on this scenario? I'm going to pump up our file server with this tonight moving from the default to 5.5Gb

Reason being, we have a recently migrated file server that is a Windows Server 2022 Azure Edition which is serving up files to our AVD environment consisting of 20ish + hosts with 10+ users on each on newest feature/quality updates of Win10 Multisession which are just hammering this thing. As of mid-may we're getting weird intermittent blocks of time where people get an error within a software that the vendor has basically stated is a "lock" error. It's not a backup, EDR/Malware Protection, Windows Defender, or VSS as this has all been tuned not to do any sort of interference on this data drive which is separate from the OS. However it is large, a 10TB SSD (not Azure Premium SSD) -- I originally was going to blame the 2022 Server OS but I found the same errors on its predecessor server which was a 2012 R2 ~ Mid May 2023. This "setup" has been non problematic for 2+ years, and for it to start in May is odd because that was after our busiest workload time of year by about a month.

The errors we're seeing are:

SMBServer - Operational - Error 1016 ->Occuring on the Windows 2022 Server

Client Name: \\AVDHOSTIP
Client Address: AVDHOSTIP:RANDOM_PORT
User Name: DOMAIN\username
Session ID: 0x580024000A09
Share Name: FileShareName
File Name: FileNameonFileServer
Resume Key: {#####-####-####-####-#########}
Status: Object Name not found. (0xC0000034)
RKF Status: STATUS_SUCCESS (0x0)
Durable: false
Resilient: false
Persistent: false
Reason: Reconnect durable file

Also considering adding some fine tuning to the AVD Hosts, the FileNotFoundCacheEntriesMax interests me.

The general tuning parameters for client computers can optimize a computer for accessing remote file shares, particularly over some high-latency networks (such as branch offices, cross-datacenter communication, home offices, and mobile broadband). The settings are not optimal or appropriate on all computers. You should evaluate the impact of individual settings before applying them.