How to use Netflix Picture in Picture (PiP) - Netflix Help Center
Premium or Ultra HD video playback without a paid subscription. Bypassed regional geo-restrictions and blackouts. Ad-free viewing experiences on mobile devices.
If you want to explore safe ways to optimize your iOS media playback, let me know:
You install AltServer on your computer, connect your iPhone, install AltStore to your device, and then use AltStore to open and sign downloaded .ipa files.