Similar problem here. I updated to WL 11.1 but could not get this to run (see Wavelab Pro 11.1 stops on start - #27 by antoinevankampen) .
I cleaned up my entire system, updated Windows, drivers, ect. Then I reverted back to WL 11.0 (first removed the settings directory).
Now I am in a situation that WL 11 needs about 15 minutes to start. It is super unresponsive. This starts already in the browser window where I can select a recent project. But then starting the project takes so long…
HELP!!