InDesign v15.1 slow to open and poor performance generally
Another decrease in performance between v15.0 (whcih was already very slow compared to v14) and v15.1 on Windows 10 x64 with a very high-spec workstation.
Particularly frustrating is when you click on the icon in the taskbar to launch the app it appears as though nothing has happened and takes 30 seconds or so before the splash screen appears and the app appears to have launched. By which time you usually tried launching it again a few times!
Thanks for reporting. We are reviewing the issue.