Hello ShockoMS,
You should exclude Non-Persisten machines from SCCM/MCEM. Since the life of this systems is relatively short, there will no time to report or deploy correctly. This applies to RDS client Sessions.
You can verify this information at: https://learn.microsoft.com/en-us/mem/configmgr/core/clients/deploy/plan/considerations-for-managing-clients-in-a-vdi#remote-desktop-services
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