Low res is for Medium to Mid High PCs. Loading time is faster than High res and less chance to crash, however resolution of several textures has been reduced.
Fixing style that this version is old & outdated. Do not download this early version, as you will find no servers for it. Current version is Full Invasion 2 v0121 released December 25th, 2014. This is a multiplayer only modification. Please only join v0117 servers. remember, you can download this and switch to v0116 by using the v116 backup inside. Nighttime patch included for those who wants it.
If you need help do not be afraid to ask, we are here to help you!