Medium resolution - Recommended version. Similar texture sizes than Vigilant's hi-res pack. For average PCs
chest and big weapons: 2k
Boots, gloves, helmets, small weapons, etc.: 1k

Highest resolution - Use if you have a strong pc, good internet and want to take close-up screenshots of the items included
chest and big weapons: 4k
Boots, gloves, helmets, small weapons, etc.: 2k

Low resolution - Similar texture sizes than Vigilant base BSA. For lower-end PCs or slow/limited internet
chest and big weapons: 1k
Boots, gloves, helmets, small weapons, etc.: 512