Assuming you have a hacked Switch (unpatched Erista or modded Mariko) running Atmosphere 1.3.x or higher:
PC emulator users often search for "Super Smash Bros Ultimate NSP Update 1302" to squash shader compilation stutters. super smash bros ultimate nspupdate 1302
Without specific details on what the update 13.0.2 for Super Smash Bros. Ultimate entails (as my knowledge cutoff is early 2023), updates for the game generally follow a pattern of adding new content, balancing gameplay, and fixing bugs. Assuming you have a hacked Switch (unpatched Erista