L-Theanine positive reaction!!
I just tried drinking Matcha Green Tea for the L-Theanine. I brewed possibly the strongest most disgusting tasting cup I could of fresh Japanese Matcha and slugged it. It drastically reduced my symptoms last night! I also felt like I took a Valium or something, super sedative, but I'll take that for a brief respite from the symptoms.
It reduced my photosensitivity, trails, and static to the point that my computer screen looked normal. Text wasn't on fire. White on black didn't stick in my vision like it normally does. I was even able to keep my FL41's off for a bit! Also when I went to bed the "noise" from having my eyes closed was significantly more quiet.
I've been going through every supplement I can but I think L-theanine might be the one for me. It DEFINITELY makes me feel sedated though so if that's something you can deal with I'd say it's worth a shot!