Most people call macOS 27 Golden Gate faster than Tahoe. Yet one of the busiest threads of the first week is about scrolling: pages that stutter, trackpad momentum that feels jittery, and a scroll some users describe not as choppy but as “heavy,” different from how inertial scrolling felt on Tahoe and Sequoia.

It doesn’t hit everyone, which makes it maddening to troubleshoot. Here’s how to narrow down what’s happening on your Mac and what’s worth trying while Apple sorts it out.

What users are reporting

Across the launch-week threads, a few patterns stand out:

It’s most noticeable on 60Hz displays. Several owners of MacBook Air models, which have 60Hz screens, report jitter on the built-in display that they don’t see on a high-refresh external monitor.
It isn’t only a 60Hz problem. Others notice no difference after moving to a 120Hz display, including on high-end Mac Studio and MacBook Pro setups.
Apple’s own apps often get named as the worst.
Mouse wheels make it more obvious, especially with third-party mice.
Low Power Mode oddly helps some people on 60Hz MacBook Airs, cutting the jitter considerably.

Some also say the problem existed throughout the beta, so it isn’t simply a last-minute regression.

Step 1: Rule out indexing

For the first days after upgrading, Golden Gate builds a new semantic Spotlight index, and Photos and Mail re-index too. That background work competes with the interface for resources and can make everything, scrolling included, less smooth.

Open Activity Monitor and sort by CPU. If mds_stores, mdworker_shared, spotlightknowledged or photoanalysisd sit near the top, judge scrolling again after a few nights with the Mac plugged in. Our Spotlight indexing guide explains how to help it finish.

Step 2: Check your display’s refresh rate

Go to System Settings > Displays, select each display and look at Refresh Rate.

MacBook Pro with ProMotion: it should be set to ProMotion. If it’s fixed at 60 Hertz, scrolling will look less smooth than it should.
External monitors: make sure the highest rate the monitor supports is selected. Cables, adapters and docks can quietly limit a 120Hz or 144Hz monitor to 60Hz. Test with a direct cable if you can.
Scaled resolutions: running a display at a “looks like” resolution that isn’t its native scale makes the GPU render a larger frame and scale it down, which costs performance. Try the default resolution to see if scrolling improves.

Step 3: Separate the input device from the system

Scroll the same long page three ways:

With the built-in trackpad.
With the arrow keys or Page Down.
With your mouse.

If only the mouse is choppy, the issue is how scroll events from that device are handled. Mouse wheels send coarse steps, and macOS smooths them less than trackpad input.

Update or reinstall your mouse’s software (a manufacturer’s companion app, for example) and check whether it has a smooth scrolling option.
If you use a scroll utility such as Mos, BetterMouse or Mac Mouse Fix, update it. Some users say these utilities improve things considerably. Some mouse utilities broke other features on Golden Gate, though, so look for macOS 27 versions.
Remove old scroll or mouse utilities you no longer use. Two tools that both modify scroll events can make things worse.

If even arrow-key scrolling stutters in Apple’s apps, the problem is in rendering, not input.

Step 4: Reduce rendering load

Golden Gate’s refined Liquid Glass relies on the GPU for blur and refraction effects, and scrolling content beneath glass toolbars and sidebars means those effects get recalculated constantly. Apple’s GPUs are tuned for efficiency rather than raw power (our explainer on why RTX Spark won’t appear in a Mac compares the two approaches), so on a base chip with a 60Hz panel there’s less headroom for heavy effects.

Turn down Liquid Glass in System Settings > Appearance, toward the tinted end.
Or turn on Reduce Transparency in System Settings > Accessibility > Display, as a test. If scrolling gets noticeably smoother, the glass effects are a factor on your hardware.
Close GPU-heavy apps and tabs while you test, including browser tabs playing video.

Step 5: Safari-specific check

Safari has a hidden developer setting that caps page rendering updates near 60 frames per second. It’s meant for testing, but it’s worth confirming it isn’t on.

In Safari, go to Settings > Advanced and turn on Show features for web developers. A Feature Flags section appears. Look for Prefer Page Rendering Updates near 60fps and make sure it’s off.

For some users this made no difference. It’s a quick check, not a guaranteed fix.

Step 6: Why Low Power Mode might help

It sounds backwards, but some MacBook Air owners report that Low Power Mode reduces the jitter on the 60Hz built-in display.

One plausible explanation: on a 60Hz panel, smoothness depends on delivering frames at an even rhythm, not only quickly. When the system’s frame pacing is uneven, a steadier, more conservative rendering behavior can look smoother than a faster, irregular one. That’s a theory, not a confirmed cause. If it works for you, it’s a reasonable temporary workaround while plugged in or during long reading sessions, at the cost of some performance elsewhere.

Turn it on in System Settings > Battery > Low Power Mode.

Check for background GPU load

Sometimes the scroll isn’t the problem, because something else is eating the GPU. In Activity Monitor, open Window > GPU History to watch GPU use in real time. A video export, a render or a model running in the background will show up immediately. If you’ve started running large AI models locally on a Mac, quit them while you test scrolling, since inference can saturate the GPU and make the interface feel sluggish even if nothing is wrong with Golden Gate.

Two quick tests separate system trouble from your own setup:

Try a new user account. Create a temporary one in System Settings > Users & Groups and scroll there. If it’s smooth, something in your own account (a login item, a utility or a preference file) is to blame.
Test in Safe Mode. On an Apple silicon Mac, shut down, then press and hold the power button until startup options appear. Select your startup disk, hold Shift and click Continue in Safe Mode. Scrolling in Safe Mode, which loads far fewer extras, tells you whether third-party software is involved.

Skip “defaults write” tweaks you find in forum threads unless you understand exactly what they change. Random preference hacks are a common way to turn a Golden Gate quirk into a harder problem.

Report it properly

If scrolling is still poor after indexing has finished and you’ve ruled out your display and input devices, it’s likely a Golden Gate issue. Apple fixes what it can reproduce, so a good report matters.

Open Feedback Assistant and include:

Your Mac model and display (built-in or external, with refresh rate)
The input device (trackpad, Apple mouse or third-party mouse)
The specific apps where it’s worst
Whether Low Power Mode or Reduce Transparency changes it
A screen recording, if you can capture one

When the hardware is the limit

If you’ve tried everything and you’re on a 60Hz MacBook Air, you may be tempted to buy your way out with a 120Hz ProMotion machine. A higher refresh rate helps many people, but it isn’t a guaranteed cure: some users report the same feel on 120Hz hardware. Before spending money, read NVIDIA RTX Spark in a MacBook or iMac to understand what’s actually coming to the Mac lineup, and wait for a Golden Gate update if you can.

The short version

Wait until post-upgrade indexing is done before judging.
Confirm refresh rate settings, especially ProMotion and external monitors.
Test trackpad, keyboard and mouse separately to isolate input from rendering.
Try reducing Liquid Glass or turning on Reduce Transparency.
Check GPU History, a new user account and Safe Mode to rule out your own setup.
On 60Hz MacBook Airs, Low Power Mode may reduce jitter.
If it persists, report it with details. There’s no Apple fix yet.

Choppy Scrolling on macOS 27 Golden Gate? What’s Causing It and What Actually Helps