An Azure service that is used to collect, analyze, and act on telemetry data from Azure and on-premises environments.
This happens when you have set the Windows UI of your AVD host not to english. When your UI language is set to another language all performance data is also collected in the that language. You can see this if you query the perf table. So you can do two things to fix this or you adjust the KQL queries or you set the default language to of the host OS to english and for the logged on users to the required language. I chose for the last. Hope this helps.