My new Acer Aspire E15 is performing very very slow, what can I do about it?
When I first received my new Acer Aspire E15, it was already a little bit laggy, the person who's running the laptop selling shop told me it is because of Windows 10, which causes almost every new laptop to be kinda laggy at times. So I've used it almost a year, sometimes it would be very laggy, and sometimes it would be average, never had it be like fast, or at least satisfying performance. The warranty is 3 years, what should I do to make this laptop run faster?
1. It constantly runs with 100% disk usage.
2. I'm using Avira as my AV program, because I once tried to uninstall Avira to use Windows Defender, it turns out eating lots of my memory, that's why I installed Avira again.
3.