Hello
Thank you for your question and reaching out. I can understand you are having query\issues related to RDP published apps hangs.
- Please try to disabling hot tracking from Performance settings of client and RDS server.
- Disable any Antivirus program or Windows firewall you may have for temporary purpose.
- Uninstall or Disable any old Printers and Printer redirection.
--If the reply is helpful, please Upvote and Accept as answer--