Asus 6z Fast Charging issue please help

RECENTLY I AM UPDATED MY ASUS 6Z version.153 And Facing Charging issue my phone not charge fast ++ not available in battery icon so I am thinking my charge or cable is not working so I am change the charger and cable also but the problem is same and one more thing when I am turn off my phone and plugin in to charging my phone not charging and phone stuck in to boot loop start and off phone again and again so I am removing the charger and then I am turn on my phone what is the problem please help I think this update have battery issue please fix this
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Please see this@Anders_ASUS
First downgrade your device back to Pie and never upgrade (Go to website and get the file)
Try another charger and cable. It's either one of these two who forces your device into a boot loop or there's something wrong with your device. If it's the later, then you need to visit a service center
Fast charging is no more fast after last update, phone is getting charge 25 % to 100% in 2 hours 30 minutes.
It's not cable or charger issue this started after .153 update. On screen it shows fast charging for name sake.