EDIT: I am Trublade on Leviatahan, not Genocydex.
I started over. :D
This may or may not solve the problem for you if you end up having a black screen in some zones while using the config plugin.
I was using the config plugin with the 60FPS cap and when I loaded into Lower Jeuno and some other zones. A lot of the screen would be black. Characters and HP crystals would load but not much else.
The fix I have found is to try different UI sizes in windower. Select your profile, go to the pencil (Edit) at the bottom of the screen, select "Game" and change the UI scale.
When I scaled my HUD up to 2.0 for example, Lower Jeuno and some other areas would not fully load.
However when I changed the scale to 1.5, those areas loaded fine. It's very finnicky. 1.7 and 1.8 etc would not load fine. You may have to find your number.
I hope it helps someone.
Took quite a bit of messing around to figure it out lol.
Cheers.
Thorny made this fix below. Seems to be more of an all around fix for the underlying issue. I am using it and it fixed the issue for me as well.
Thanks Thorny.
https://www.dropbox.com/s/wz2ckvmqju7kfdh/LargeAddressAwarePatcher.zip?dl=0
Decided to just throw it together. If you're experiencing these black screens, try using this to patch pol.exe. If you play on private servers, patch your bootloader's executable as well.
Included the source files that matter if you want to build it yourself, it isn't anything complex or fancy. Needs .net 4.5 or newer.