The Legend of Zelda: Breath of the Wild (BotW) version 1.6.0, released in April 2019, is a significant milestone that introduced support for Nintendo Labo VR and unexpectedly boosted performance through "boost mode". Core Update Features (v1.6.0) VR Mode Compatibility : Added support for the Toy-Con 04: VR Kit

most likely refers to the "Boost Mode" functionality or community-made high-fidelity mods that became popular alongside this version. Official 1.6.0 Features

To summarize the impact of the "Extra Quality" setup running on the 1.6.0 architecture, one only needs to compare the draw distances.