Update
Microsoft confirmed the performance fix affecting ERP will be released on July 20 as KB5004296. For more information see "KB0108621 February and March 2021 Windows
EDIT Current list of updates that have been seen to slow the performance of Epicor are as follows.
W10 build 1909 KB5000808
W10 build 2004&20H2 KB4601319 & KB5000802 & KB4601382
Server 2019 Build 1809 KB4601383 &KB5000822
Original Topic
As far as I know nothing has changed in the environment except maybe the typical windows updates that get processed from time to time, but as of 2/11, maybe a day or so earlier, loading data into a form in Epicor has drastically slowed down.
Queries donāt seem to be effected, but when you open job entry, for example, open the search dialog search for any job, which results load quick, and then select it, the loading of that job into the entry screen is painfully slow, it takes at least 8-10 seconds (for me, longer for others) for the form to fully load and be usable. If you click on the clear form button it takes about the same amount of time to clear the form and you will get a (Not Responding) in the title bar for a few of those seconds.
Iāve power cycled pretty much everything in our environment, Server, Domain controller, switches, Firewallā¦ Iāve also double checked to ensure there were no pending updates that were installed but waiting for a reboot on the Epicor server. No other network traffic seems to be hindered like this and if you are using Epicor on the server locally itās a 1 second form load time, nearly instant.
Running a quick āLan Speed Testā application and writing a 500mb file to the Epicor server from my machine Iām seeing speeds of 728.5Mbps write and 860.4Mbps read, as well as pingās are all <1ms. Most of the network machines in my environment are only 1 hop away from the server, there is a small handful that are maybe 3 hops away, but all of the backbones between those switches are at min 1Gbps full duplex links. Iām also not seeing high network port usage on the switches at all, they typically are all reporting 0% load on all ports, even the uplinks.
Any insight or areas I can check will be greatly appreciated.