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 devices seem to connect normally with the Deco nodes. Phones can use the internet normally and the Ookla speedtest shows a throughput of around 300 Mbps. However, when I connect a laptop (and I've tried several ones here in the house), it will connect properly but when opening websites it seems to get 'stuck' (web pages are loading very slowly). Throughput speed does not seem to be the issue here, since once the page has been loaded (for example the Ookla speedtest page), download speed seems normal. Also, since I need to use the laptop, I've re-installed a small part of my Devolo powerline system (so both the Devolo and the Deco system connect to my internet router). When the laptop is connected to the Devolo system, no connection issue is observed.

I suspected a DNS issue, so I configured fixed DNS entries in the laptop's network settings. However, that also didn't solve the issue.

So again, everything seems to work well and fast, expect when using laptops to browse the web (laptops are updated to latest driver versions) and the problem seems isolated to the Deco system, not the internet router. Does anybode have an idea what could be wrong here ? Any help us much appreciated :)...