You would have to change the material to get rid of the calculation.
In Material editor, there is a node called ‘Static Switch Paramter’. It can be changed in a material instance and that compiles an extra set of shader if changed. There are some other standard paramaters public in every material instance that do the same: in the material instance in the general panel there is a tab called ‘Material Property Override’, there you can set the Blendmode or if the material is two sided.
what I am wondering is, if there is already a new shader being used even when I just check the boxes in the material instnace but don’t change the value. Also it is possible to set a material instance as parent for another matrial instance. Maybe it is just an organisational thing but in the end I’d like to know how many shaders I have produced…