[nextweek2]

I hate these questions.

You need to put it in context. Is system ram under pressure? Poor memory performance is measured by swap i/o or bandwidth, not usage.

If you have 16gb of ram and little else using the ram then there is nothing to worry about. If you have 4gb of ram then a support ticket is probably your best course of action rather than whining to random forums.

To answer your question, runtimes will lazy garbage collect because you might want the data again. Decompressed images and frame buffers lead to faster under interface interaction. You're not using a terminal app, you're using an app that can render any font or image in complex ways to an image buffer, for rendering at 60fps with smooth scroll. Are you also on a retina display?