Inadequate Compression in TVAI

yeah, that is to high bitrate for file efficiency

Or you can export your video in TVAI with Lossless Compression, then head over to an external tool (like I do), such as: Handbrake, VidCoder, Avidemux, Hybrid, etc. and compress it with your favorite CRF settings using CPU for your final video. that way you enjoy both worlds, Quality and size.