IE11 - starting it and then a blank page for a second or two

You're most welcome, FanJ.
Are the "Cumulative updates for Internet Explorer" truly cumulative, like the Rollups, and unlike the Security-only updates? In that case, waiting for the September updates seems like a good idea.

 

@Minimalist posted here after the MS Sept updates:

(emphasis by me)
For now I have not seen that improvement.
Having installed now:
Security Only Quality Update for Windows 7 KB4457145
Cumulative Security Update for Internet Explorer KB4457426
Office 2010 update
KB4457918 Net Framework update.