What the FUCK could be causing my internet to have packet loss ONLY when it is dark outside. I know it is not an issue with my equipment or the ISP itself, we have checked and changed everything we can, and I am losing my fucking mind.

The closest thing I could think of is a short in one of the lines and something with the street lights, and in that case, how do I get someone to fix it, because my ISP refuses to help me anymore and I'm basically wasting money on internet that won't even work while I'm awake.