Why having two graphics cards can slow down Lychee Slicer, and how to fix it
Some gaming PCs have two graphics cards, useful for gaming, but it can work against you when it comes to 3D printing, since Lychee Slicer may end up using the weaker (usually integrated) card instead of your dedicated GPU.
This is resolved by enabling Force High GPU Mode: see our Force High GPU Mode article for the steps.
If you're still experiencing slow performance after enabling this, you can also override which GPU Windows assigns to Lychee Slicer directly in your Windows display settings, and it's worth checking that your graphics drivers are up to date.