Random lag/slow peaks after fan speed drops

Hey everyone,

Just ran into this problem a few days ago and still can’t seem to figure it out.

System boots and wakes up beautifully. Everything runs butter smooth for the first few seconds: opening apps, safari, tabs, settings. CPU fan is at full speed.

Then it randomly drops. All performance just suddenly goes away: some apps freeze, some stop answering, some animations keep randomly working. I can move the cursor but nothing responds.

I’ve tried lots of things unsuccesfully. Only today I’ve noticed that it seems connected to the CPU fan speed: when it drops, performance is lost. When it randomly bursts again, it all comes back.

Any thoughts on what I might be encountering?

Thanks in advance.

macOS Monterey i7 4790K @4.0GHz Gigabyte B85m-D3PH 32GB RAM Sapphire RX 580 8GB OpenCore 0.7.7

submitted by /u/dwellerofthegrove
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