When utilizing LFS in slow WAN environments, it could become troublesome transferring large amounts of data due to the length of time and potential timeouts.
Like Bitbucket Cloud implement Bitbucket LFS Media Adapter:
Bitbucket's LFS Media Adapter is a custom Git LFS transfer agent that enhances uploads and downloads of Git LFS files. The Bitbucket LFS Media Adapter utilizes our native Media APIs to provide you faster uploads and downloads through chunking, de-duplication, and parallelization of chunks. Follow these easy steps to speed up your LFS file transfers.