Downloaded the project and at first it seems like it’s an aliasing issue but after looking at the back of your mesh I see there is additional geometry to create a closed mesh.
I think it’s aliasing and would suggest adding a LOD without those grooves modeled in.
But because of the geometry behind those panels it could be a depth sort issue since they’re so close to each other it causes the appearance of Z fighting even though the geometry doesn’t technically share the same space.
Delete those rear faces and test for the flicker.
You might even be able to make a LOD without the closed back?