Best screen recording software for Pure Speed

Worth separating two things — recording resource cost (CPU/RAM/disk while capturing) vs export speed (what ScreenKite is benchmarking). For pure recording with minimum overhead, OBS with the "macOS Screen Capture" source (uses ScreenCaptureKit under the hood) + HEVC hardware encoder via VideoToolbox = the lowest-CPU path you can get on Apple Silicon . The hardware encoder runs on dedicated silicon (the Media Engine), so it costs near-zero CPU even at 4K60. Default queueDepth in OBS is fine for screen capture. ScreenStudio is great for the post-production polish but it captures at higher quality + buffers more aggressively for the smooth-zoom feature, which costs more during recording. CleanShot X is genuinely lighter for quick captures because it skips most of that buffering. If "send to developers" is the goal and you don't need the cinematic zoom, OBS recording HEVC at hardware encoder = small file, near-zero CPU during capture, decodes anywhere. ScreenStudio still wins for polished tutorial-style recordings.

It's the easiest and already built-it option though. Another way is to use Quicktime player screen recording feature it is also lightweight, easy to use, and can be used for both mac os and ios screen recording without a need to install any apps.

Otherwise use macos built in and you can crop with handbrake

exactly, this is my goto tool

I think something like OBS would be best here. You can configure a lot of the factors that would contribute to system resource usage and performance.

Why not the native screen recording with Command + Shift + 5 ?

Apple's built-in (Cmd+Shift+5) is the lightest by a wide margin — native AVFoundation, no third-party process, hardware h264 encoder path means single-digit CPU during record on Apple Silicon. Output is a raw .mov which is exactly what devs want to debug from. Screen Studio is great for produced content but the heaviness comes from the post-processing UI, not the recording itself — you can skip the export step entirely for the "send this to a dev" use case and copy the source recording straight out. If you need a quick crop or trim before sending, QuickTime can open the Cmd+Shift+5 output and trim without re-encoding. Truly minimal pipeline. OBS Studio is surprisingly light for plain screen recording if you set it to the hardware h264 encoder — but the workflow overhead for "send a quick screencap" makes it overkill unless you're already running it for streaming.

obs

The export speed bottleneck isn't really about Electron vs native — it's about when the composition happens. Most tools (including Screen Studio) treat the zoom/cursor/background as post-recording effects, so they have to re-render every frame after you press stop. That's where the export wait comes from. Tools that compose during recording don't have an export step at all. CleanShot has been doing some of this. I'm also building one in this space — ScreenLive (screenlive.app) — where stop = file ready, even at 4K. Disclosure: founder, just shipped. Happy to answer technical questions in comments if useful. For pure speed today: native ScreenCaptureKit-based tools (ScreenKite, CursorClip) tend to beat Electron exports by a wide margin. Worth checking those too.

-> CMD + Shift + 5 Its not enough: Recordly (free)

I’ve been building Shipclip. It’s 4x faster than some of the other apps I’ve tested against. Has 90% of the features that screen studio has If you’re looking for raw speed without any effects, nothing will beat OBS because OBS has no edit / export phase. It just builds the file while you record.

checkout tinyrec.io

If you haven’t already, check out the MacApp Comparisons in the r/MacApps sidebar.

OBS with hardware HEVC is probably the best “boring but reliable” answer here. Screen Studio looks nicer, but if the goal is pure speed and low overhead, fewer cinematic sparkles usually wins.

I used OBS, very intuitive and feels lightweight enough without compromise on functionality. That's the best recommendation I got. See many others also recommend it

You could try Cleanshot X if you want basic recording, or you can try Borumi for zooming feature, they do offer a lifetime licence I think.

Cmd+Shift+5 was already mentioned as the lightest path. Worth adding: pair it with the built-in trim handles before exporting and you skip a re-encode entirely. The .mov stays in the original codec, which is also what devs want to debug from.

I use Cap, it's opensource and works well on my device. Feels similar speedwise to Screen Studio.

QuickTime for me. Super lightweight, no fluff, barely notice it running. Perfect for quick bug reports to send devs.

not 100% screen recording, but I made an app called Mirror Input! it lets you screen share your iPad | iPhone | any Mac wirelessly to your Mac with minimal latency and no screen recording indicator you can then feed the stream directly into any app of your choice so say iMovie, Final Cut, OBS etc and record the screen. You can find more details on how it works and tech specs here: https://mirrorinput.app