The 4th operation in this project file is taking well over an hour to process, uses up 8GB+ of RAM, and locks up the PC so badly that it can't be used for anything else until the op finishes processing from the Machining tab. If anyone has some time, could you please take a look at the file and see what I am doing wrong.
The problem op is a a roughing waterline with a 1/4-in ball end mill to clean up the the 1/4-in fillet that runs around the elevated boss on the workpiece.
Thanks, Mike