One wonders about this.No matter how powerful your PC and video card is, you WILL have trouble with large files. Usually anything with more than a few hundred thousand lines of code.
Let us say that a typical instruction is G1 X1.23 Y4.56 Z7.89. This is 20 characters. Add 2 for CR/LF. 22 bytes. Let us imagine a program of nearly 500k lines. That is about 10 MBytes of program space - in a PC with 2 GBytes of memory. Of course, it could be in a 64 bit machine, not a 32 bit one. Let us assume a 2 GHz clock. And assuming that Mach is issuing about 10 updates per second, which is I believe the normal rate.
We assume the PC is dedicated to running Mach and not off playing with a web browser most of the time of course.
Ah, guys, just where is the problem? I am slightly puzzled by the idea.
Cheers
Roger