AppHalt knowledge base
Gabriel Nion is the independent creator of AppHalt and editor of these practical Mac guides. The articles explain what to check first, favour reversible steps and primary references, and state where app pausing can genuinely help.
Google Chrome can use a lot of CPU on a Mac when a tab, extension, video call, web app, or background task is actively working. The safest fix is to identify what is busy first, reduce that workload, and only pause Chrome when you genuinely do not need it for a while. Do not force-quit […]
Google Chrome High CPU on Mac: What It Is and What to Do Read More »
Learn how to use Activity Monitor on Mac to find apps using too much CPU, memory, or energy—and decide what to do next.
How to Use Activity Monitor on Mac: Find Apps Slowing It Down Read More »
Your Mac looks quiet. No big app is open. Maybe only the desktop is visible. But the fan is still running. It feels strange because, from your point of view, nothing is happening. No video export. No game. No large file transfer. No heavy creative app. Yet your Mac may still be working hard in
Mac Fan Running With No Apps Open? Here’s What’s Really Happening Read More »
Mac apps can keep working in the background because they are checking for messages, syncing files, updating content, playing media, or keeping a workspace ready. That is normal until the activity is no longer useful to you. The practical goal is not to disable everything: identify the app, understand what it is doing, and pause
Why Mac Apps Keep Running in the Background and How to Take Back Control Read More »
If you opened Activity Monitor and saw mds_stores using high CPU on your Mac, the first reaction is usually confusion: what is this process, why is it using so much power, and is it safe? The good news: mds_stores is usually not malware. It is commonly related to Spotlight indexing, the system that helps your
mds_stores High CPU on Mac? What It Means and How to Reduce It Read More »
If WindowServer is using high CPU on your Mac, your Mac may feel slow, hot, laggy, or visually sluggish — especially when you have many windows, tabs, displays, or apps open at the same time. Seeing WindowServer near the top of Activity Monitor can be confusing because it does not look like a normal app.
WindowServer High CPU on Mac? Why It Happens and How to Reduce It Read More »
Background Items are apps or helpers allowed to perform work when their main window is closed, such as syncing files or checking for updates. Keep items you rely on; disable an item only when you recognise it and do not need its background work. What is safe to disable in Mac Background Items? Usually, an
Mac Background Items: What Is Safe to Disable and What You Should Keep Read More »
If your Mac feels hot, slow, noisy, or unusually busy after installing the macOS 27 beta, high CPU usage is one of the first things to check. Beta versions of macOS are exciting because they give you early access to Apple’s next features. But they can also make your Mac work harder than usual, especially
macOS 27 Beta High CPU? How to Find What’s Slowing Down Your Mac Read More »
If your MacBook battery drains faster after installing the macOS 27 beta, the first thing to know is this: it does not automatically mean your battery is damaged. Beta versions of macOS are exciting because they let you try new features early. But they can also use more power than a stable public release, especially
macOS 27 Battery Life Draining Fast? Fix Beta Battery Drain Read More »
If your Mac feels slow after installing the macOS 27 beta, you are not alone — and it does not automatically mean your Mac is broken. Beta versions of macOS are exciting because they give you early access to Apple’s next features. But they can also feel less stable, less optimized, and more demanding than
macOS 27 Beta Slow? How to Fix Performance, Battery Drain, and Background Apps Read More »
