Support on Huawei Smartphone remote Camera App

We have developed a client and server application between huawei P30 Pro and Android Tablet. The Tablet controlls the Phone camera via our app on the phone. the app uses huawei camera SDK to controll remote zoom and take picture in the phone. the system works good, except one issue that we need help. the picture quality is much lower if taking the picture from camera SDK comapred to original camera app. we use 5x optical zoom we will provide our current app source code to help with the issue