Sadly restarting the router wasn't an option for me, but i did try some other troubleshooting. Change from wired to wifi, windows internet troubleshooting, restarting the pc, restarting vortex, manual download, different browsers. No change. I do find it odd that the default(?) cdn test peaked at 0.2MB/s while direct connections worked fine. In the end I just bought a year of Premium, and that seems to work perfectly fine, so I guess its related to the free servers?