I am experiencing an issue similar to the following thread:
https://www.telerik.com/forums/unresponsiveness-in-visual-studio
SSIS projects are unresponsive in Visual Studio 2019. Saves take several minutes, and Memory/CPU spikes during the process. The Telerik extensions must stay disabled when working with SSIS projects/packages.
Application: Visual Studio 2019 - Enterprise
Telerik Extension Information:
Telerik.CommonPackage - installed 5/13/19, version 1.2.0
Using the latest versions of all Telerik Extensions (asp.NET, Core, MVC)
System Information: Windows Server 2016 Standard (64bit OS)
About "Microsoft Visual Studio 2019"
Microsoft Visual Studio Enterprise 2019 - Version 16.1.3
Microsoft .NET Framework - Version 4.7.03062
Please let me know if I can provide any additional information for you.