My experience is similar to, and actually slightly worse than yours. There is a sticky message in the section above on this forum with guidance on maximizing speeds. It's probably worth trying them if you're not already practicing them as a matter of course (they're pretty elementary). They did not help me.
Some seem to report good speeds. More speeds like ours. I suspect the latter is the more common (since it is my experience

). Most people, though, don't really know what to expect.
Good luck.