How To Play 4K Netflix on a PC

I pay for 4k on Netflix, Amazon & Disney but the only app on the box with will output to 4k is Disney Is there a reason why Amazon and Netflix aren't?

Netflix streams content to Xfinity X1 in SD, HD and Ultra HD 4K resolution To receive HD or 4K streaming of Netflix programming on X1,

betflix 10รับ100 Connecting the Fire TV Stick 4K is as easy as plugging it into a vacant HDMI port on the back of your TV and connecting it to the power Once physically

betflix88asia Yes they play but not at 4k If you have traffic a monitoring tool you will see that the stream bitrates will be in 1080p range, under 10mbps