I think so...But I will continue my research, and I suspect Android 14 compatibility issues with FF 122 and 123.I will follow the list of developments since version 122
I installed Firefox 121.1.0 from Aptoide and no more battery drain with youtube...Edit : I spoke too fast, battery drain starts again (2000mAh vs 800mAh usually on my S9), but no more lags !
Same thing for me since FF 122.0 and 123.0 :High battery drain, phone and tab overheat when I watch video on Youtube (with ublock) !I have noticed same thing with my phone and my 2 tablets :S24 Ultra - Galaxy Tab S9 and Galaxy Tab S8 Ultra !And last ...