WAX206 Wireless AX or AC Upload Speed Disparity

If you are comfortable with or have the time and willingness to compile your own OpenWrt (How do I compile OpenWrt?), you could try one of those "removal of 160 MHz" commits or pull-requests, which are discussed in 802.11ax worse than 802.11ac with mt76 driver?

I personally have not yet compiled OpenWrt on my own, so cannot help there, but it would be very helpful to the community if people would start testing those more, as the number of people that have tested them is very small.