: Most competitive players prefer 1920x1080 in Full Screen mode. While windowed mode is an option, Letterboxing should generally be disabled as it can introduce unwanted latency.
Before you even think about sensitivity, you need to ensure your game runs smoothly. osu settings
Remember, changing settings requires muscle memory to adapt. Don't change your sensitivity every day. Pick a setting, stick with it for a week, and let your brain adjust. Good luck on those FCs : Most competitive players prefer 1920x1080 in Full
: Enable Raw Input to bypass Windows mouse acceleration, ensuring your cursor movements are a 1:1 reflection of your physical hand movement. stick with it for a week