Valory provides a beautiful rank overlay for your stream. Overlay under the hood runs on vanilla JS, so it has minimal load on your PC.
Project was inspired by the work of davizeragod and tracker.gg/overlays. Initially, the project was a fork of davizeragod, but then it began to exist as a separate project.
Valory is completely free and has an the MIT license. If you want, you can put a star on Github.