Ensure your system firmware can actually handle the game version you are trying to play.
The NSP file is a package file used by the Nintendo Switch to distribute and install games. Issues with the NSP file can prevent the game from functioning correctly or even prevent it from being installed. In the case of Prison Architect on the Switch, some users reported problems with the NSP file, which led to a free download and fix.
While there is no perfect fix, these general troubleshooting steps can sometimes resolve specific issues, especially performance lag and crashes.