CPU Boosting When Plugged in Causing Performance Issues

[deagle15]

Hello,

 

I've owned my Acer Aspire E5-576G for a few months now (bought it with grad money for my freshman year at college). I'm pretty versed in computers along with troubleshooting, however I can't figure this out. My laptop has an Intel Core i5-8250U processer along with NVIDIA dedicated graphics. When my computer is unplugged, it runs Minecraft and Rocket League at a comfortable 1.65 GHz and is pretty smooth. However, whenever I plug in my laptop, the CPU boosts as high as 3.4 GHz and stays there. I'm thinking that this is too high for the CPU and is causing some problems. The boost is instant after plugging in the laptop, about one second after (you could sit in Task Manager and watch the clock speed bounce back and forth). The same goes for the lagging that is happening in game; I could literally unplug and plug in the charger and go back and forth between smooth and laggy. I've tried manually lowering the CPU speed through the "Maximum Processor State" setting in Power Management, however even set at 30% the value is being overridden and the CPU stays at around 3.3 GHz. I've also tried some other solutions I've seen, such as setting Min and Max Processor state to 1% and 99% respectively, setting all "Plugged in" power management settings to the same as the "On Battery" settings, updating BIOS, updating chipset drivers, along with some other things I'm probably forgetting. I contacted Acer about this, and they just recommended to restore factory settings and reset Windows. I'm not opposed to that, but I'd like some more opinions on it before I do it.

[Ashleyyyy]

3.4ghz is fine. it's the boost clock listed on Intel's website. 

https://ark.intel.com/products/124967/Intel-Core-i5-8250U-Processor-6M-Cache-up-to-3-40-GHz-

 

what is cpu and gpu usage like?

[deagle15]

GPU and CPU are both around 50% in games. Another thing I forgot to mention was that the issue only happens while the battery is actually charging. When the battery is at 100% and plugged in, there's no problems.