True!
Following:
rtl8812au wifi dongle on RPi 3
"rpi3:~ # cat /etc/modprobe.d/8812au.conf
options 8812au rtw_power_mgnt=0 rtw_enusbss=0 rtw_ips_mode=1 rtw_vht_enable=0 rtw_ht_enable=1"
did the trick.
Limits the wifi to N instead of AC but seems to be more stable as far as I can tell from the testing I have done so far.