MPU6050 at high accleration is not able to generate interrupts

hi i am using mpu6050 at threshold setting- 1 , motion duration 1 , lpf-0, dhpf- 4, FSL- +-2G with internal frequency ,
I2C is at 100 Khz and mcu at 2khz , please guide me what can be the issue is not able to generate interrupt when i am giving very high accleation to the mpu
.i am using only acclerometer others i have disabled.
thanks