This specific build (617740) has been widely regarded as the "best" recent release due to its stability and improved playback engine.
As of late 2024/early 2025, YouTube is constantly changing its API. Version 617740 may eventually break when Google forces a new protocol (like QUIC or enhanced DRM for 8K). However, the beauty of the developer community is that new versions are always released. smart youtube tv apk 617740 best