We have a client that is running 1 Physical Server running 3 HyperV machines.
The SQL Server is running slow on all machines when accessing their CRM when generating reports and general navigation (on SQL)
We have been running the "LAN Speed Test (Lite)" Utility to check the speeds of the read and write and they are taking between 25-60 seconds to write a 1Mb file to the SQL Server.
The CRM company have wasted their hands of it as they said it's environmental.
We have checked the latest Windows Updates and none have installed, we have also removed the AV to test and still the same speeds occur.
We have even connected 1 PC and the Server into the router to remove the network switch and still an issue.
Is there anything else we can check?