Codebuild waiting for DOWNLOAD_SOURCE takes to long

Hey floks,

while trying to optimize our time it takes to build or ECS service, we encountered it takes Code Build over three minutes to start the Phase Download Source. Is there a way to optimize this?

Logs:

[Container] 2023/04/20 13:10:39 Waiting for agent ping
[Container] 2023/04/20 13:10:40 Waiting for DOWNLOAD_SOURCE 
[Container] 2023/04/20 13:14:22 Phase is DOWNLOAD_SOURCE   <---- over three minutes delay
[Container] 2023/04/20 13:14:22 CODEBUILD_SRC_DIR=/codebuild/output/....

Thanks, Oliver