@Kevin_Z Tried a different router entirely and it works with no issues. Can't choose other ports anyway since only 1 is enabled by ISP. Sent this back to the service.

So the title sums it up. Bought this "thing" about 2-3 months ago and its been giving me headaches ever since. 1. WAN port gets stuck to 100mb/s even tho' my connected clients are 1000mbs and 100mbs...