Missing VHT support for internal WiFi

Hi,
I wanted to use the RasPi as an AP (amongst other things) but the internal WiFi driver only seems to allow 5 Ghz at 20 Mhz and not 40 MHz or 80 MHz as the chip is capable of. Therefor you can only use the AP at maximum 72 MBit/s instead of 867 MBit/s. Is there a fix available or something I can do to increase this?

Also, is there a place to actually manually set the channel width to 80 MHz? In Raspberry OS this is done via the hostapd using the vht commands. I could find nothing similar for the network manager.

Thank you for your great work!

Best regards
Alex