When the battery level drops below ~20% on a MacBook Pro or MacBook Air, macOS will decrease 10/25G Ethernet transmit performance in order to conserve battery life for the laptop.
Only Windows Server has native support for Teaming. The TWIN25G can be configured for Teaming under Windows 10 or 11 with the NVIDIA command line tool, mlx5muxtool.exe, which is included with the drive download. Sonnet does not support this tool.