dear Mud Wizard,
yes they are both connected at the same time.
probably this will help:

---------- Post added at 19:20 ---------- Previous post was at 19:05 ----------
Your BQM graph looks good after the initial red packet loss, which I assume is where you rebooted your Superhub? As you didn't leave it going long enough before rebooting it's difficult to tell what it was like before.
Is your connection any better now?
lol its actually worse!
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You can run a continuous ping by inserting a -t option before or after the ping address.
Anyway, the data you provided (along with the good BQM) implies that the high latency problem is from your computer to the Superhub (not with the VM network). i.e. with the wifi or powerline. You need to test again without wifi involved to see how the powerline on its own performs.
While the high latency is most likely due to wifi interference, have you checked to see if the two powerlines are also interferring with each other? i.e. Tested with one of them off.
Also resetting the powerline before testing might be a good idea, as you said when you did that previously things improved?
my BT powerline does not have wifi capability. it only supports ethernet connection. so, one BT thingy is connected to superhub by ethernet cable, then itself is plugged to electric socket, the other is connected to electric socket in my room and is connected to my pc with ethernet cable. it simply does not have wifi.
the cmd pic was for BT ethernet connection only.
btw, i have a PCI-E wifi card which i use for wifi connection.
http://www.tp-link.com/en/products/d...L-WN881ND.html
and im using this as antenna:
http://www.maplin.co.uk/p/ultra-gain...-antenna-a28jb
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Surely with this being a serious internet issue you can find some time to test when they are not using it? Only takes a few minutes.
could you kindly tell me how to do the test please?
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Does your BT powerline adapter have an ethernet port (e.g. on the top) that you can plug your computer directly into without disturbing your house mates? You need to take wifi out of the equation for testing.
yes, as i said above, it does not have wifi abilities, it only use electric socket as a bridge for ethernet connection ^^