[ https://github.com/seemoo-lab/nexmon ]( https://github.com/seemoo-lab/nexmon )
 
Looks like a very useful toolkit for experimentation in making wifi fast. I'm guessing that the queues can be managed better, for example.
 
Notice at least one Lede router works, along with Raspberry Pi 3, etc.
 
Also, ability to transmit arbitary waveform from quadrature samples using DAC. [ https://github.com/seemoo-lab/mobisys2018_nexmon_software_defined_radio ]( https://github.com/seemoo-lab/mobisys2018_nexmon_software_defined_radio )
 
The reception via ADC of a sampled waveform seems to be undemonstrated, but may be feasible. If so, one can experiment with alternative modulations, etc.