Why does my Acer Aspire A315-59-30HT lag when plugged in, but run normally on battery?

Dipper
Dipper Member Posts: 1 Newbie

Hi Acer Community,

I’m having a persistent issue with my Acer Aspire A315-59-30HT where the CPU speed drops to 0.40 GHz when the charger is plugged in. The laptop becomes noticeably slow, even though the CPU utilization stays between 9%–17%. When I unplug the charger, the CPU speed immediately returns to normal and the system runs smoothly again.

I checked Task Manager and confirmed:

  • CPU speed: drops to 0.40 GHz when plugged in
  • CPU utilization: stays low (not maxed out)
  • Memory, GPU, and other components are normal
  • Only the CPU is affected
  • I’m not using battery saver mode
  • Power plan is set to Balanced / High Performance

As a temporary workaround, I tried rapidly unplugging and plugging the charger, and it causes the CPU to go back to normal speed for a few minutes. I know this isn’t ideal, but I used it just to finish work or games.

Here’s more info:

  • Model: Acer Aspire A315-59-30HT
  • Purchased: July 2023
  • OS: Windows 11 (default)
  • No BIOS mods or overclocking

Could this be a firmware, charger, thermal throttle, or power delivery issue? Any tips, similar experiences, or solutions would be appreciated. Thanks in advance!

Answers

  • SemihB
    SemihB Member Posts: 141 Skilled Fixer WiFi Icon

    @Dipper

    This is related to power management of operating systems. Set the power management plan to high performance. Some additional/hidden settings are available. The example is below;

    Video 1 - High Performance method win11

    Video 2 - High Performance advance method win11

    Please let us know again after trying them. Also restart the PC after your operations.

    Please click like if your problem is solved or write my problem is solved.

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    The biggest reason why the problems are not solvedis if someone who says there is a problem with the GPU says; If I change the case, will the problem be solved? That's the whole point! The concepts are different! We should not go off topic.