At first the issue was that there was this colored, glowing light emitting from between the blocks so i tried tweaking all of the settings to no avail- so i updated my drivers and it seemed to fix that issue, but now the issue is that anything emitting light is flickering and not fully casting light. Here are the errors it's giving me, which are the same as before I updated my drivers and restarted. Literally tried every single setting and nothing changes anything.

composite12.fsh: composite12.fsh: 0(1205) : error C1503: undefined variable "GetLPVPosition"
0(1206) : error C1503: undefined variable "SceneLPVSize"
0(1207) : error C1503: undefined variable "SampleLpv"
0(1208) : error C1503: undefined variable "GetLpvFade"
0(1210) : error C1503: undefined variable "GetLpvBlockLight"

yep

like this