Harmony on Macbook using bitmap layers


So, I have a MacBook Pro and am using ToonBoom Animate Pro, but found that I am choking up the program with all lines I’m drawing. People recommended bitmap layers in Harmony, since I can scribble a ton of lines. Does anyone else have a sketching style and how does it affect your computer? How big is your file size and are you able to output the media file with no problems? I’m considering buying Harmony, but if it gives me the same problems as Animate Pro, then it’s not worth buying. Thanks for your input.