Hi @Snellz, thanks for your post.
On testing your line, we're showing that the router is receiving 3.2mbps, which is within the expected estimates for the line itself.
Are you able to confirm whether you're experiencing the slower speeds over both wired Ethernet and wireless connections, or is it solely wireless?
If it's solely wireless, I'd recommend taking a look at the guides here.
If you're also experiencing the slow speeds on your wired connections, I'd recommend taking a look at these guides.
Please let us know how you get on.