Cubase 10.5.10 Update Issues

HI, I installed the 10.5.1 update, when launch cubase, just after when initializing VST2x…plug-in Manager \ Initializing appears", the program stays freeze for at least 3 minutes, then Steinberg HUB appears, I uninstalled the cubase 10.5.1 and so I was install again Cubase 10.5, and launch correctly, so I understand the 10.5.1 update has issues / bugs, I have been using Nuendo / Cubase for 18 years.
i know very well those software’s and it’s tricks . (Windows 10 1909, Yamaha Nuage) (update made on two different computers with the same results.)