Engine Vibrating at certain ICE RPM

I have this strange issue where if I'm driving at roughly 44-60 km/h and my blue bar in Hybrid System Indicator is three quarters full (halfway past the eco line, halfway to PWR), my engine vibrates + my whole cabin. It's completely fine at any other speed or acceleration.

Here is a video where I get my engine to exhibit this behavior a few times roughly the first few seconds in. It's been getting louder recently.



I've replaced my spark plugs and this issue still persists. I don't think it's the head gasket as my coolant is fine and I have no other symptoms for that issue. I have not cleaned my EGR yet.

Other than this issue, my car runs fine.