When Telerik UI for WinForms / WPF extensions are installed, Visual Studio is unresponsive for a couple of minutes after a solution is loaded. During that time, "Updating source control status…" is shown.
Workarounds:
Use attached to reproduce. Workaround: - Use RadForm it explicitly handles the controls scaling. - Make sure that the following of the user controls are set like this: this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi;