\HKEY_USERS\.DEFAULT\Printers\ConvertUserDevModesCount large size on Terminal Server

Hi,

Server details:
Windows Server 2019 Std
Version 1809 (OS Build 17763.678)
Terminal Server

Issue: 
We noticed that \HKEY_USERS\.DEFAULT\Printers\ConvertUserDevModesCountsize is huge and some users are complaining of slow printing on the Terminal Server. The \HKEY_USERS\.DEFAULT\Printers\DevModes2is empty

Any suggestion on how to fix the \HKEY_USERS\.DEFAULT\Printers\ConvertUserDevModesCount size or is this normal for 2019?

I saw this post that might be related but this is for 2008 and 2012 servers > https://support.microsoft.com/en-us/help/2871131/the-size-of-the-hkey-users-default-registry-hive-continuously-increase