[SOLVED] High CPU spikes lagging the system every 1-2 seconds

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CPU caps at 400 MHz on 12 gen i5-1240P

Got my new Framework laptop (i5-1240P) two weeks ago but just started setting it up since last Friday. I found some people had already reported this problem and it seemed random: I believe I’ve tried all solutions mentioned in above threads (except the EMI sticker). None of them works. I’ve tried Fedora, Ubuntu and Arch. They all have the same problem: once CPU usage spikes the frequency is locked at 400MHz. An more obvious evidence is that when started running stress test in s-tui, all …