Disable auto-compile

Every time I change a parameter or hookup, the shader gets recompiled. This is great for nice fancy computers, but it takes 2-3 seconds to do on my crummy laptop for a 3-node setup. This makes it very very difficult to weak values, since every value change takes 6 seconds to complete (2-3 to delete previous value, 2-3 to enter new value). I'm sure the problem is much worse with more nodes. It would be very nice to be able to disable auto-compile and have a "Compile" button somewhere.