I recently bought premium, because of the low download speeds I had. Now it should be unlimited, but It's still capped at 1 MB/s per file. My download speed in Steam etc. is ~10 MB/s so I think it isn't my connection problem.
The thing is, I can download one file with speed of 1 MB/s and multiple files every also with 1 MB/s. So technically there is no cap, because I can download 100 files 1MB/s each, but when I want to download large files ~5 GB it can cause problem.
I'm using MO2, connected to Nexus, cleared cache, tried reloging, changing server to nearest (Prague for me).