Seems to be working on a X1 gen2 using iwm0 at pci2 dev 0 function 0 "Intel Dual Band Wireless AC 7260" rev 0x83, msi against a Unifi AP-SHD.
Before: bandwidth min/avg/max/std-dev = 7.344/9.077/11.514/0.803 Mbps after: bandwidth min/avg/max/std-dev = 12.551/65.407/82.835/14.169 Mbps -- I'm not entirely sure you are real.