I've been using an anker QC 3.0 charger on the OP3T and it charges fine.
it doesn't get hot, doesn't say it's fast charging but it seems to charge at a reasonable rate nonetheless.
hope it works out, a limited edition red one is out today.
if you can suffer the ads during web browsing then leave it as is.
if it's fast enough for you, leave as is.
if you can't afford a replacement if it breaks, leave as is.
if it was going to mess up due to poor manufacturing, it should've by now.
coming from a note 10.1, it's fantastic.
Sent from my GT-N5110 using xda premium
don't install 'everything' run it 'clean' for some time to see if part of 'everything' is the cause.