High GPU usage on Desktop Window Manager with LG 27GP850 monitor

[Speedbird]

Hello,

 

I have an HP Elitebook 840 G7 exhibiting a weird issue. When doing certain tasks on one of my external monitors (LG 27GP850), the GPU usage gets much higher than it should on Desktop Window Manager. This is most noticeable when playing a video on YouTube in windowed mode (it does not occur in fullscreen mode), but also when moving windows around fast. It also does not occur when using my other 1080p 60hz monitor. So far, I have tried

• Updating drivers for the GPU, from both HP and Intel's websites.
• Lowering the refresh rate from 144hz to 60 or 120
• Updating to Windows 10 22H2. 
• Using a different browser (Edge)

Many solutions I have seen online for this mention some kind of bug with NVIDIA drivers, but this laptop only has Intel graphics (i7-10810U, intel UHD graphics).