Hello,
I understand that you are having memory performance issues with your App Engine Standard application and you would like to download the source code.
I have found some information
here indicating that the Cloud SDK does not support downloading the source code. I’m thinking that you do not have access to the original code that was deployed but if you do have access, I think this is your best option.
You mentioned that you have memory issues and you do not know why. To start the process to get the initial information, you may choose to view the logs according to this
documentation. Please do not post your project information in this thread but it will point you in the right direction. Right now, I see no common issue based on the information you provided.
Google Groups is meant for general discussions. If you wish some advice regarding the next steps after you look at the logs, please reply and we will gladly assist you then.