How to debug shader caching?

I have an issue where I think GTA V is not correctly caching shaders.

Using DXVK_HUD=compiler I can see that it is often compiling shaders, however, after a few hours of playing there's no increase in disk size nor does it stop compiling shaders, even if I stay in a same area/field of view.

Outside of steam games, I have yet to learn about vulkan shader caching, unfortunately I only own this game through Epic.

Is there something I could do to debug/workaround this situation?