The latest official update for LEGO City Undercover on Nintendo Switch is Version 1.0.2
Lego City Undercover patch is out and it's 479MB : r/NintendoSwitch
Update 1.0.2 (The Stability Patch)
The gameplay mechanics in LEGO City Undercover remain largely intact, with the NSP update refining and polishing the experience. Players can expect:
: Early versions suffered from constant dips, sometimes hitting as low as 15 FPS in handheld mode. The latest patches have stabilized the performance to a more consistent , even in the busy open-world sections. Bug Squashing