https://wccftech.com/fortnite-5-20-patch-improves-nintendo-switch-gpu-optimization/

A new Fortnite patch, patch 5.20, is now available on all formats, bringing new content to the game as well as several other tweaks and fixes.

Interestingly enough, the new patch also brings some performance improvement for the Nintendo Switch release. Patch 5.20 introduces significant GPU optimization on the console, increasing dynamic resolution by 10% in expensive scenes by moving to the high-end forward renderer.