Roblox RunService Heartbeat vs RenderStepped - The Full Guide

If you've spent any time scripting in Studio, comparing roblox runservice heartbeat vs renderstepped is something you've likely had to do once you realized wait() just wasn't cutting it. It's one of those fundamental concepts that separates beginners from developers who actually understand how the engine ticks. While they might seem like they do the exact same thing—running code every single frame—choosing the wrong one can lead to jittery movement, input lag, or a game that feels like it's running through molasses. ...

January 16, 2026 · 7 min · Mazariegos Joanou