Alma causes high CPU and max fan speed after recent Computer Use update

  • I’m seeing a severe fan/noise issue after recent updates related to Computer Use / Activity Recorder in Alma 0.0.792 on macOS 26.5 (Apple M1 Pro). The main hot process is Alma Helper (Renderer) (PID 99511), which peaked around 38%~46% CPU, while Alma Helper (GPU) (PID 99361) also stayed high around 14%~17% CPU.

  • At the same time, WindowServer was consistently elevated (~33%~44% CPU), and the fan ramped up to maximum. After quitting Alma completely, Alma processes disappeared and the fan noise gradually dropped, which strongly suggests Alma is the trigger.

  • A stack sample of the GPU process shows heavy activity in QuartzCore, IOSurface, Metal, CA::Transaction::commit(), and surface copy/commit paths; Alma also loads ScreenCaptureKit and ReplayKit. This looks like a continuous screen-capture / visual-analysis / preview-render pipeline, even when Activity Recorder appears to be turned off.

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Upvoters
Status

In Review

Board
💡

Feature Request

Date

About 1 hour ago

Author

Mark Li

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