Thanks @Marvin_S ! I tried all 3 suggestions: unfortunately the result is the same for all of them => still very fast internet access via my phone but access to web pages 'hanging' on my laptop.

A couple of months ago, I bought a set of 5 Deco XE75 Pro's to replace my Devolo Powerline system. Setup was easy and everything seems to be working. However I'm encountering a strange issue. All...