ProSafe Plus Downspeeding Ports on its own

Factory reset, unfortunately, didn't change the downspeeding, in fact, it shed light on something else.  Recently, I had purchased some very nive (so i thought) category 7, braided ethernet cables from Amazon, 1, 3 and 8 meters.  I wanted to use the best cable possible for my main workstation, NAS, port aggregation between switch / NAS.  What I found was, by chance, when I switched from the "high end" CAT7, braided cable, back to normal CAT5/6 at the PC or at the NAS, everything immediately shot back up from 90-100mb cap to 490-500mb, as it should be.  Strangest thing I have ever seen.  I did not think CAT7 cable would cause this and I tries several different lengths and pre-cut sizes, same 100mb cap.  No idea why it does that, but it does.  Perhaps some kind of pair mismatch with the internal house wiring / ports on the switch, etc....

So, these are the cables that slowed me down: Cat7 Ethernet Cable 3 ft, Cat 7 RJ45 LAN Network Cable High Speed Durable Nylon Braid STP with Gold Plated Plug (3FT/1M, Nylon Braid - Black)

Anyway, Im back up and flying @ 500mbps with standard CAT5.  Who'd have thought.

Mike