iPhone 6s Plus videos now lag behind and out of sync on iOS 11.0.1

[max2]

Is this normal on iOS 11.0.1 with a iPhone 6s Plus ?

Should I drop back down to iOS 10.3.3 ?

Doesn't happen on my iPad Pro 10.5 inch.

This is all on nPlayer Plus.
[doublepost=1506733389][/doublepost]Hmm it may be because it is WebM video format. Interesting.
[doublepost=1506734085][/doublepost]2160p 4K Video does that have anything to do with it ?
[doublepost=1506734353][/doublepost]Seems to be only this one video. Weird.

 

[max2]

Went back to iOS 10.3.3 and it seems to play fine now. Weird.

Anyone know why ?

 

[max2]

So I did a fresh install of iOS 11.0.1 this time and it seems to make a difference but not sure yet.

I did have lag deleting default desktop icons I didn't want on my iPhone screen