You seem pretty hard set on the opinion that OP just booted up two CHRs to do bandwidth tests between them, and not had some actual bandwidth issue that led to him making these tests, glossing over the fact that he said he also tried a file transfer that also got similarly limited.
My reply here is because its a fairly similar issue and maybe he fixed something, that could apply to my case.
Still, I followed your advise and opened an new thread: