Sway bar pre-load

HapaZ

Can someone help me understand how pre-load on a sway bar affects handling? For example, I am lowered and have aftermarket sway bars but stock end links so I understand that since the upper mounting points of the endlinks are lower to the ground they put more downward pressure on the swaybar since the length of the endlink remains the same. I also understand that aftermarket endlinks exist and would correct this problem, but I’m trying to get a sense of how a pre-loaded bar front and/or rear changes the handling. Thanks for any input!