I've checked the speed with different online speedtests like speedtest.net and bredbandskollen.se. The all state the same speed.
I've installed the latest drivers from MSI. Also tried downloading them directly from Realtek.
I've tried the MSI LAN tool but the speeds were the same wether it was installed or not. I currently don't have it installed.
EDIT: tried another speedtest, image of results:
EDIT 2: Also, the wi-fi speeds on my phone is 40/40, 70/70 when close to the router. Also had 100/100 on my old pc (that is now not working).