FArrowGravityMult

This multiplier determines the gravity on arrows. The default value is 0.02. If you increase this amount, arrows will fly straight for a longer period of time. If you decrease the amount, arrows will go straight for a much shorter period of time.

If you increase this amount, and decrease the speed of the arrow accordingly, you can basically have a slow speed arrow. Terrible for playing purposes, but neat if you want to make a video where an arrow is going slower than everyone else.