I presume you've got a HH5.
Wireles speeds for download on the laptop sound a bit slow, but upload sounds about right. I suspect it may be a hardware issue with your PC, but pretty impossible to tell from the info. I have a wired ethernet from my HH5 to a PC and that is about the fastest connection I get, wifi depends on which laptop / iPad / iPhone I use and where, but it's always slower.
Not an expert with PC ethernet - mine just works!