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Laptop cpu multiplier locked when using battery

Rska96
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Hey All, first post on the forum.

I bought an Acer laptop with a Ryzen 5 2500u processor and recently noticed that the cpu clock speed was capped at 1.6GHz when on battery power. The base clock of the processor is supposed to be 2GHz. I ran CPU-Z and noticed that the multiplier was locked to 16 when on battery. Is this a bug or a "feature" to extend battery life (if it is for battery life, they shouldn't have bothered because the battery only lasts 2 hours). Are there any workarounds to "unlock" the cpu when on battery. And before you ask, I have tested using the high-performance power plan, reason I mention this is that every thread I've found on similar issues, half the responses were to try the high-performance power plan. Also, I have the latest bios from Acer and all my drivers are up to date.

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In power options you should be able to set it to "high performance" then change the advance settings and under processor management change the minimum processor state.

 

Change advance power settings > processor power management > there should be something about minimum processor state and active cooling policy. It might be 5% which is low, just change it to 100% but be advised you will have less battery life.

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I tried that, it doesn't seem to make a difference. Clock speed capped at 1.6GHz, cpu multiplier still capped at 16. When plugged in, the cpu multiplier sometimes reaches 36, and clock speeds reach 3.2GHz.

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I think it's a limitation by firmware/BIOS

My Desktop specs:

Spoiler

AMD Ryzen 5 5600 Nvidia RTX3060Ti 8GB PNY XLR8 Gaming Epic-X RGB 16GB (8X2) 3200MHz CL16 Team Group MP33 Pro 1TB
ID-Cooling SE-224-XT White Gigabyte B550M DS3H mATX Tecware Forge M2 mATX White Case Montech Century 650W Gold

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why wouldn't they make a custom power plan so that end users could choose to change it instead of limiting power usage in the BIOS.

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