I, too, am confused as to the purpose of this new thread.
We have been through this numerous times: 1, 2, 3, 5, 6,... basically all of your threads -- I'm counting 14 threads about this, I think.
You simply will never get the performance you are seeking via wireless. This fact will not change, and the recommendations are the same, too: run ethernet cables (we know that's not possible in your situation, but is the correct technical solution), or get really high quality powerline adapters which might work.