I don't know what you guys are talking about. I have had a C class 77' OLED in use for over two years now. There is no burn in and no color fade.
I have used the Netflix, Amazon apps, and downloaded the BPO app. The remote works fine, and my biggest issue is that the buttons do not illuminate. The ergonomics could be improved. However the system is driven mostly from my 4K HTPC via my Marantz pre/pro. The eARC, much to my surprise, has worked well without hassles.
I would take the problems about OLED TVs circulating on the Internet, with a very heavy grain of salt.
If you are having slow ups, I bet it is your Ethernet/Wi-Fi at fault. This complicated AV gear should have hard wired Ethernet, and your router needs to be exemplary.
If you are using a Comcast router for instance, expect trouble. With modern AV gear your home Ethernet infrastructure, router, WI-Fi, and Internet access need to be to the highest standards, and obsessionally planned, engineered and installed, or expect issues, and lots of them.
From what I have seen Ethernet and Internet is not planned, and is a disaster in most homes now.