YouTube Filter Issues on iOS 27

The new YouTube ad-blocking filter works very well. However, I’ve noticed two issues:

1. YouTube Premium background playback stops working when switching apps or locking the screen, despite having an active YouTube Premium subscription.

2. Content loading speed within the YouTube app is noticeably slower.

Device: iPhone 16 Pro
OS: iOS 27
YouTube account: Active YouTube Premium subscription.

Could you investigate and improve the filter to ensure ad blocking doesn’t interfere with Premium features or app performance?

Thank you!