Slack Desktop App Consumes Excessive RAM and CPU on Laptops
Slack's Electron-based desktop application is notorious for high memory and CPU consumption, degrading performance on laptops especially when multiple workspaces are open. This forces users to close Slack to reclaim system resources or accept reduced responsiveness across other applications. The issue has persisted for years and is a known architectural constraint of the Electron framework.
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Similar Problems
surfaced semanticallySlack High Memory Usage and Unreliable Notifications Reduce Reliability
Slack consumes excessive system memory and notification delivery is inconsistent, causing users to miss messages or experience sluggish performance. The Electron-based desktop client is a known resource bottleneck that Slack has not fully resolved. Teams dependent on Slack for real-time communication cannot tolerate missed notifications from a tool positioned as their primary channel.
Slack Desktop Client Too Resource-Intensive on macOS
The Slack desktop app on macOS consumes excessive CPU and memory, causing system slowdowns during normal use. The Electron-based architecture is the root cause — a structural constraint not easily patched. Enterprise users running Slack alongside other heavy tools feel the impact most acutely.
Slack Desktop Client Lags When Switching Between Conversations
The Slack PC client exhibits noticeable lag when users switch between channels or DMs during high-activity periods, breaking the fast-scanning flow that knowledge workers rely on. The performance degradation is particularly disruptive during busy project phases when quick context-switching is critical. This points to rendering or state management inefficiency in the desktop client.
Slack desktop app consumes excessive RAM and CPU on laptops
Knowledge workers running Slack alongside development or creative tools experience significant performance degradation due to the app's high memory and CPU footprint. This is a structural Electron framework issue that Slack has not resolved despite repeated user complaints. It affects the majority of Slack's 32M+ desktop users and compounds on lower-spec machines.
MS Teams uses 20-40GB memory on Mac since Microsoft acquisition
MS Teams regularly consumes 20-40GB of memory on Mac. Extreme resource usage since Microsoft took over the app.
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