Thank you for the constructive feedback. I'm planning on fixing the card lag in a post-game jam update. Sadly, over scope of the project means not enough testing was done during development.
I'm curious what you mean by the wall texture glitching out. I know there is some issues with European players where the walls are completely black and the shading doesn't render correctly due to how decimal numbers are handled compared to the US. Is this what you are referring to?