Good news everyone. The testing has concluded and thus far no difference in movement speeds for the Metal Gear Solid Master Collection Vol. 1 Versions of Metal Gear MSX have been found. The movement speed is the same as HD Collection and PS2 NTSC speeds. That's why you can now submit your Metal Gear MSX Speedruns to the NTSC/HDC/MC sub-categories for your preferred speedrun category.

Happy running everyone!