Games are now permanently lagging after unplugging battery charger

[Azuro]

I was playing a game when I decided to unplug the battery charger from my laptop. However after I did that the game started the lag immensely. I tried plugging the battery charger back in but sadly no change.

I thought maybe a restart would solve the problem but it sadly did not. I ran a couple of system scans in the hope of finding something that might be affecting my laptop but the scans turned out clean. What I did notice was my disk usage was 100% most of the time. I tried checking for what might cause this in the task manager but couldn't find anything useful.

Thanks in advance

 

[Ivan96]

Check power options and put them on high performance

 

[f-14]

that's the Achilles heel of laptops, battery mode triggers power saver windows options which cuts your video and processor performance by 90%.
you have to go into windows power plan options to change it