I read a couple articles where PlayOn plans on adding 1080p support...... After over 10 years of begging it's finally here right?
https://www.techhive.com/article/3606071/playon-just-got-a-lot-better.html
You can read the Article or just read this snippet below..
Also, video resolution is limited to 720p, and that's not going to change for the desktop version. (PlayOn says it plans to add 1080p video support later this year, but only for the cloud version of its service.)