Mario Kart 8 Deluxe Update History | Nintendo Switch | Support
While there is no official feature named "Extra Quality" Mario Kart 8 Deluxe update mario kart 8 deluxe 303 extra quality
There were no updates to graphics, sounds, character balance, or track designs in this version. Mario Kart 8 Deluxe Update History | Nintendo
Use a LAN adapter. High-quality visuals don't matter if your opponents are teleporting due to lag. The Modding Scene (Unofficial) update mario kart 8 deluxe 303 extra quality
were minimal, stating simply that "several issues have been addressed to improve the gameplay experience". Security Fixes