New laptop boots slowly when low battery

I have a new laptop (2 months old) with the following specs AMD Ryzen 4700 AMD Radeon Graphics 8GB RAM 1200GHz 500GB storage SSD and, most of the time, it boots very quickly (i'd say a few seconds) and runs perfectly. Sometimes, however, when it boots with low battery (maybe 20%) it does that incredibly slowly, and it also runs slowly when it's on. After a few restarts however it works fine. Why is that? Ps. It runs with Windows 10

Question by user35319 on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.