Same here, no lag issues at all. As soon as I got the phone I did eliminate animations and set power saving to normal. No lag and battery life is excellent. My old HTC One + needed 2 full charges to get through the day. On this I get a full two days.
I have a 0.5 amp desktop USB - I know almost useless, it came with my bluetooth headset. I am too lazy to crawl under the desk and replace it. A few hours during the day and the Honor is topped up. I don't charge at night anymore. Nor forget to charge at night.