Lenovo Tab 3 A10-70 choppy YouTube

[Lixteris]

Hello guys. I bought Lenovo Tab 3 A10-70 today, but I see some problems. Sometimes screen doesn't recognize first touch, maybe I'm pressing not so hard? YouTube App video (720p) looks like a few FPS down compared to watching with Galaxy S7 Edge, sometimes I see a real slow down in the YouTube video. This tablet have Android 6.0, 2GB RAM and MediaTek MT8735 1.3GHz CPU. What you guys thing: it's a failed device in my hand or MediaTek MT8735 + Android 6.0 sucks so hard?