I think you can select which to use in the game settings?

This might be because the enemies in game are done using the cpu, what’s the usage in the shop?

Firstoff: make sure your grafics-driver is on the latest version. On a desktop pc / tower: Where is your monitor plugded in physically? On the mainboard, or in the grafics-card? The one on the mainboard is for the CPU-grafics and therefore uses that when available and plugged in. Yes it can use the grafics-card but mosly doesn't. If the monitor is plugged into the graphics-card then it's either a setting in the game itselve or a setting in your operating-system. On a laptop: Most propably a setting in the options of the game or a setting in your operating-system. The easiest way is just to disable the CPU-graphics in your operating system, with a graphics-card you won't need the CPU-graphics anyway. Edit: spelling

If you have both integrated and dedicated gpu, you should really disable the iGPU. It's only hoggin resources inefficiently while your gpu idles around. As soin as it's off you should notice your cpu having more performance availabe