...it's fully charged and you leave the charger on it and use it then?
I have a Lenovo Flex 3 laptop that really works well when it's not plugged in to charge. However, when I have it plugged in, every app and browser becomes almost unusably slow. Specifically I like to edit video on this computer and once I start to run out of battery, I just have to stop and let it charge.
Are there any alternatives or fixes that would help this situation? Whether it be an external item I can buy... or if it's a known problem with some sort of fix?