Memory leak issues on switch are quite different from pc since the hardware is completely different. The pc memory problems mainly affect ray tracing setups which isnt even possible on switch, so those specific fixes dont apply here. For performance slowdowns on switch, your best approach is keeping things running smoothly with some basic maintenance, like doing full restarts instead of just sleep mode and making sure all your game updates are installed. Its worth checking if you notice differences between docked and handheld play, and closing other apps can help free up some resources.

Good to know: something interesting about mods, they're just not an option on switch due to how the system is locked down, unlike pc where you can tweak all sorts of things. If you're noticing the game getting sluggish over time, you'll need to rely on official patches and updates that nintendo approves, since thats really the only way to get optimization improvements on this platform. Keep an eye out for those system updates too, since they sometimes include performance tweaks that can help things run better overall.