Avid’s video engine still relied on older codecs. Solution: Transcode to DNxHD 36 or ProRes LT. 2021.7 did not fix H.264 long-GOP playback.
: This version remains a critical "last supported" release for many users on older hardware. For example, 2021.7 is the final compatible version for some 2015 Mac models . pro tools 202170
If the massive 2021.6 update was about expanding horizons—adding the Hybrid Engine and native M1 support—then is the essential follow-up that makes those features actually usable for daily professional work. 1. Enhanced Stability for Video & UI Avid’s video engine still relied on older codecs