What version of Windows Server are you running? If 2016 or newer, look into TS-Fair Share options. Windows slows down the performance of each session so that everyone has a consistent session, but Lacerte requires more in burst performance. Once these options are disabled, the performance is far more manageable. https://learn.microsoft.com/en-us/troubleshoot/windows-server/remote/fair-share-enabled-by-default-i...