Well Godot 4.0 is likely releasing next year. When is anyone's guess, maybe in early 2023, who knows. OpenGL support in there already (you can test it now, but it's unfinished) and won't come officially until Godot 4.1. This will be the major release that finishes the missing features (OpenGL, HTML5, etc.). When this comes, I don't know. Well, no one knows, because there is a ton of work left. My guess would be late 2023 or early 2024 (though we may have beta before then). Granted, I think OpenGL support is super important, and I plan to help with the development, but it's a huge project. I think maybe it could be prioritized (since other people like you are using older laptops) but, even then, I think mid 2023 is a best case scenario.