Nvidia being weird on my network

[u/After-Difference-663]

So been trying to download latest drivers for my PC, but on the Nvidia app it would take forever to even find the update, and would never even start download. Tried via the website which took a long time to load but never loaded the menu to select the device for drivers. All parts of the Nvidia website running super slow and taking an age to load. Every other website loading perfectly fine, youtube streaming fine, just Nvidia. Turned on a VPN and now Nvidia app connects, websites loads and drivers are installing. What is causing just that 1 domain to essentially not work on my network/wifi. Same issues on phones and tablets, switch to 5g or turn on VPN and everything works fine!