Google claims its upcoming Chrome 55 release will significantly cut down memory consumption thanks to optimizations in memory management.
You'll have to wait until December 6th to try the finished version of this update on the desktop, although you'll almost certainly get to try it earlier if you're willing to run pre-release code. Whatever you try, it's important to stress that this won't improve performance across the board. You'll mainly notice the difference if your device doesn't have much memory to start with, or if you're juggling Chrome alongside other apps (especially if you have many browser tabs open).
Furthermore, Google promises more improvements will follow in the future.