Had similar issues last year when we set up our operation. Thought we just needed high tonnage but turns out the washing and screening stages are just as important. Found a good Aggregate Plant supplier who explained that everything needs to work together properly. They designed our setup based on what we were actually processing rather than just selling us the biggest machines. Much better results now - we hit our production targets and the finished product meets all the local specs for construction work. Worth getting proper advice rather than guessing