Hi guys, I found a common issue on Asus 505.
If you set your display brightness to under 20% and wait around 30 seconds you will notice your screen flickering for some time.
On another forum, some user already tells me their unit have the same issue and for now the device that gets the issue are TUF 505 DD, DY, DT, and GD.
Tbh, I really disappoint with Asus, because this issue also appears in my unit and I will not buy and will not recommend any Asus device for my family or acquittance in the future.

I hope this issue does not occur in your unit.