OK, I have performed a much more apples to apples test this evening. i.e. I have used exactly the same set up for both the Yayzi and VM connection.
So, with the Yayzi connection…same issues as always - in-game packet loss and lag, the symbols coming up saying the connection has dropped etc., etc. There was a bit more packet loss picked up on a standard ping as well this time.
On unlugging the cable going from the UDM to the ONT and plugging it in to the VM modem and carrying on playing…no packet loss, disconnection warnings etc. Unplugging to modem, pluggin back in to the ONT, off we go again with in-game packet loss and lag.
So, by the process of elimination, it has to be the Yayzi connection that is having problems and introducing lag/packet loss in to the game.
@Yayzi_Team did you manage to take a look at this?
Cheers.
Keeop