The most critical updates for the Switch version were released in 2018 to address severe performance issues:
If you run an un-signed NSP or a tampered DLC file on a modded Switch (using Atmosphere or SX OS), your console’s unique certificate will be flagged. Once Nintendo bans your Switch, you lose access to the eShop, online play (for games that work), and cloud saves. A ban is permanent. wwe 2k18 switch nsp update dlc link
WWE 2K18 is a professional wrestling simulation game developed by Yuke's and published by 2K Sports. The game features over 100 WWE Superstars, including John Cena, The Rock, and Brock Lesnar, among others. Players can choose from various game modes, including MyCareer, Universe, and Royal Rumble, to experience the thrill of WWE wrestling. The most critical updates for the Switch version
This update improved camera smoothness and movement speed in MyCAREER mode, which were previously described as "unplayable". WWE 2K18 is a professional wrestling simulation game
By following these steps, you can enjoy the enhanced experience of WWE 2K18 on your Nintendo Switch with the NSP update and DLC.