@Ewkie BTW On 26th last month "Asus UK Support Team" replied to my question. Of course I asked about ZenWiFi AX (XT8) but in email they used example of RT-AX88U. When I saw asking me to disable WiFi...

@Simple_Engineer Hi. I'm happy that it worked for you. Unfortunately I don't think it would help me because my QoS is disabled since I own my mesh system. Thank you very much for trying to resolve...

@Pedro109 Thanks for prompt response. I contacted Asus support yesterday first time ever and we will see how it goes... If Asus won't help me probably I will end up with same solution as you. Have a...

@Pedro109 Hi there! Have you found any solution yet? I have same problem since last year when I bought Asus XT8. I have 5 x HS100 v2.1 connected only to one and closest AP but it doesn't help. Smart...