spdMerlin Odd result upload speed after ISP change VLAN AX86U

[Plompie]

Hi All, been a while since last been here as everything was running super smooth for years.

Since a few weeks I’ve switched ISP’s. Both at a 1 Gbps subscription and still over the same fiber but other service provider. This new provider (Odido Netherlands, former T-mobile) uses a VLAN for internet from the ONT (VLAN 300) which I added via the IPTV menu of my AX86U. The Speedtest on my wired PC still shows abt the same results of ~930 Mbps up and down. However SpdMerlin shows odd results for the upload as per below. As the provider confirmed the line is fine and speed tests on a wired PC confirm same, I wonder why SpdMerlin shows such odd results.

Could this have to do with the VLAN as this is the only setting I changed?

The switch happed on the 23rd:

Edit; typo

 

[Crimliar]

As an aside, you've performed the test, just as all the tech junkies are on their Xmas jollies. Might want to see what it's like when life has returned to normal!