Please help. I've experienced big framerate drops ever since installing Glorious Merchant. It happens when I ALT TAB out of the game

[Mango1385]

For reference, this never happened until I recently installed the Glorious merchant mod a week or so ago. Since then, the game will boot up and work smoothly, but after alt+tabbing out and back in, I lose anywhere between 10 - 20 fps. I've tried a bunch of different things, but no avail yet. Does anyone know what's going on?

Note: I've deleted the mod files, reinstalled the game, verified the game files, still no luck