Question about Anker Soundcore Liberty Air 2

I had no problems with Netflix or YouTube, but I'm not a heavy user and these were my first in ear true wireless bt headphones, so I'm probably not the most competent reference :)
Anyway, I'm very happy with them

As of today, I would describe all in ear buds true wireless as potential junk. a) because they are also based on Bluetooth, an ancient error-prone protocol and b) because there is always the danger that you will have lag or no connection at all or a disturbed connection. Regardless of whether audio or video, with most products you have the problem that one bud (master) connects well and also has a good signal - but on the slave bud you usually have a delay. In my opinion, this is a problem inherent in the system.
I have 5 pairs of true wireless ear buds -- from cheap Aliexpress pairs to these Anker buds ... Problems gas with all of them, including the Anker unfortunately.
Meanwhile, I still use the Overear headphones, mostly ANC. They are bigger, more expensive but have much better sound, no lag, and the connection between L and R is stable. With the Buds, this can suddenly disappear. No fun - I wouldn't buy Ear Buds today.

Unfortunately, you can't give a conclusive answer here.... I asked myself the same question before I bought it. On the first day, I was pleased to find that there was no humanly noticeable delay (I also measured this with special apps for clock indication and no lag came out).
But unfortunately this is not always the case... in the meantime I had several episodes where the synchronisation went down the drain and there was quite a bit of lag... it seemed as if the audio playback was lagging due to buffering... after pausing and restarting the video, everything was fine again. Happened especially on Youtube. So if everything works there is no lag, but it can still happen in certain situations. P.s. I had this phenomenon more often with laptop playback than with the mobile phone. My Galaxy Note 10 Plus also had this problem a few times.