Hi guys,
I have an Asus F554L and I am experiencing exactly the same flickering issue.
I am going to try the suggested workaround above with the power plan settings, I hope it will work out because after 1 year of using this laptop having it always plugged in to power is pointless, If i cant move it around without power I'd rather get a desktop.
Definately a bad choice for laptop, specs are fine but quality of manufacturing is below average.