Wrestler entrances frequently suffer from audio desynchronization, where the music finishes long before the wrestler reaches the ring.
: The game engine tied physics to the framerate, meaning dropping frames literally slowed down the physical speed of the match.
The "NSP" in the search query stands for "Nintendo Submission Package." According to technical documentation, an NSP file is a container format used by Nintendo to distribute and install games, updates, and DLC on the Nintendo Switch system.
The frame rate often tanks during wrestler entrances. Turning these off in the settings can keep the gameplay closer to 30 FPS.