GPT processing from command prompt

Please tell me.

I tried to perform GPT processing with SNAP, but the analysis speed is significantly slower compared to manual analysis. It takes about four times as long as when analyzed manually. The maximum memory usage for the SNAP main body is set to 32GB. However, when performing analysis with GPT, I can only achieve analysis speeds similar to when limiting the memory to 8GB. Is there a way to configure the memory settings used during GPT processing?

Thank you.