UE freezes when saving a material that is related to current shader compiling
I changed some bools in my MICs and added some more parameters in my material parameter collection which resulted in heavy shader compiling, something like 26000. While shader compiling I changed the base material and saved that which resulted in UE4 freezing and locking me out. But in the task manager I can still see ShaderCompilerWorker doing their shader compiling.
asked Jul 17 '15 at 02:49 PM in Bug Reports
I found within the documentation the location to turn off automatic shader compiling. Turn off the Live Update option within the Material Editor and your issue should clear.
Live Nodes and Live Update
I would also take a look at the Material Parameter Collection documentation as it has some useful information on its limitations in case you run into an issue there as well.
answered Jul 21 '15 at 08:46 PM
Follow this question
Once you sign in you will be able to subscribe for any updates here