ASUS ROG 3 - Wifi Connection Issue

[Nanoo]

Just now an update released, after the update wifi is not working in High bandwidth, but 2.4G band is working fine form my router.
The exact problem is when I connect in High bandwidth connection, it connects for some seconds and then it disconnects, it's going on in a loop. Then wifi connection scanning phase is hanging afterwards. Right now I have connected in 2.4G band, it's working fine.
Note: When I bought the phone in factory settings, faced the same issue. After the updates, it was fine. But after the version 17.0823.2009.99 , it's reverted and it's worse than before.

[xihe]

What do you mean high bandwidth?

[Nanoo]

xihe

What do you mean high bandwidth?

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The 2.4 GHz band provides coverage at a longer range but transmits data at slower speeds. The 5 GHz band provides less coverage but transmits data at faster speeds.

[xihe]

Nanoo

https://zentalk.asus.com/en/discussion/comment/129735#Comment_129735

The 2.4 GHz band provides coverage at a longer range but transmits data at slower speeds. The 5 GHz band provides less coverage but transmits data at faster speeds.

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Do you have other devices connected fine to the 5ghz WiFi band?

[Nanoo]

xihe

https://zentalk.asus.com/en/discussion/comment/129736#Comment_129736

Do you have other devices connected fine to the 5ghz WiFi band?

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Other device (TV, Laptop and other phones) are working fine in both Bands. It's only ROG 3's issue.
Before the update It was working fine.
Note: After the update 17.0823.2009.99, this issue occurred.