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TPS61089: How to improve the performance of load transient

Part Number: TPS61089 Hicompany team , My customer used TPS61089 which comp circuit is the same as Typical Application in specfication. But they found the load transmit are not both quickly and good(Test conditons:0A@ 0.5ms ->2A @ 0.5ms) And there is a huge voltage-drop like the following picture. we will appreciate ifcompany can give some advice to improve performance of load transient.Thank you!

Dear Sir, We need to know Vin, Vo and your current schematic.

Hi Helen , The VIn is 7.2V and the OUT is 12V/3A. The attachment is their sch. Thank you!

I found you use a 0.1uF VCC cap, please change it to 2.2uF/16V rating cap. 0.1uF is really too small. But this may not the root cause of the output voltage drop. You can increase the Rcomp=30k, ccomp=2.2nF for a double check, by the way, what is the output cap effective capacitance under 12VDC bias?