Following a landscape tutorial from Udemy (building your first 2 games). When the instructor makes changes to a material and hits apply it’s instantly on his landscape. When I make changes it updates almost instantly in the shader editor as expected, but then when I hit apply it compiles hundreds of shaders (more than a minute wait every time I hit apply). I have a new laptop that is VR Ready (Razer Blade 15, i7 9750H @2.6GHz, GeForce RTX 2070 Max-Q).
Hi, I can’t answer your questions, since you haven’t asked any 
Generally every time you apply your changes, then it needs to recompile shaders since you have changed them. The speed with which the shaders are getting compiled depends on the power of your CPU.
With 12 threads at 2.6Ghz it should not take too long, but of course that is way less power than what a desktop PC would have at equivalent prices.
You need to use a material instance, not a material.