The phrase is not an official Bandai Namco term. In the pirated/repack community, it specifically refers to user-generated improvements applied after the Codex crack .
Cinematic sequences in Kakarot have letterboxing. The extra quality variant injects a widescreen fix. dragon ball z kakarot update v1031codex extra quality
: Often referred to as "extra quality," this and subsequent HD updates improved environmental details, such as clearer water quality, more detailed backgrounds, and smoother in-game cutscenes. Quality of Life Improvements auto-text advance feature for dialogue events. The phrase is not an official Bandai Namco term
3.3 Compatibility
v1.031 incorporates several "Quality of Life" fixes that were missing at launch: such as clearer water quality