Sites only load when using VPN

[#1]

Following on from the above post, it might be interesting to see the result of a tracert to one of the 'misbehaving' sites?

[#2]

@gcbmendham  have you ever tweaked your router's MTU to a non standard setting (perhaps for connecting to the Sony Playstation network, or similar), as having a misconfigured MTU can cause the symptoms you are reporting.

.