After all the warm recommendations here to upgrade to Alpha version which I have promised to myself in order to avoid bugs, I just upgraded to an Alpha version for the first time after I stopped it because of Asus made me a QA tester about 1 year ago.
AX88u - 2 PCs (Router and a Node)
Never thought a dirty upgrade would be so fast and further more- seamless.
I came with fear because of past experience.
Running now for 20m and 21 clients connected like a charm (did 1 reboot right after the upgrade, would do another one now)
Hope that the new WIFI drivers would assist few IOT devices I got disconnecting and re-connecting.
My huge thanks to
@RMerlin for his terrific work, definitely worth the donation I did not so much while ago.