Keep in mind this thread is a work in progress but I will try to update with ones that catch my eye. That being said:
A new Patch has been released apparently fixing the fps drop when using summons. Link
[Special K] FFXV Mini-Mod: Resource Mgmt. Performance by Kaldaien: has been updated see new link.
http://steamcommunity.com/app/637650/discussions/0/1697167168518535998/
(Be warned if you are using reshade you will have to use a work around to get both this and reshade working together visist the steam discussion to find out more)
https://steamcommunity.com/linkfilter/?url=https://github.com/Kaldaien/SpecialK/releases/download/sk_special_projects/SK_FFXV_NoAntiDebug.7z. <--- new link.
[MOD/TWEAK] More Responsive TurfEffects Grass and Longer Lasting Trails by reddit user null-subject:
Link
Having persistent crashes and memory leaks? Well apparently disabling steam overlay helps with mitigating to out right stopping it. Just right click the game in your library and select properties, you should see the option to disable it there.
Texture mods are starting to roll in as well:
Noctis White Tshirt mod by steam user isaki:
http://steamcommunity.com/sharedfiles/filedetails/?id=1326226101
Change music in game:
Change Noctis Hair, Eyes, Shirt , Outfit color by steam user: isaki
Link
FF 15 now on nexus mods:
https://www.nexusmods.com/finalfantasy15
That's it for now will continuously update.