MPU6050 Vibration noise filtering - DLPF and Kalman Filter

Q - Process error
R - Sensor measurement error

Here the process data is from the gyroscope of MPU6050 and sensor data is from accelerometer of MPU6050.

So, I increase Q (Process error), then I'm neglecting the gyroscope data and considering more of accelerometer. The noise is due to vibration which means due to accelerometer data. So why do u want to increase the Q ??