You should be able to change it back using dinput8, in the character stat settings. However you have to set it to the desired amount. So you should remove all your character's gear and modify the stamina amount you see without any buffs or gear. If this doesn't fix it you may have changed one of the Augments, making it buff your stamina much more than it should. You should check in dininput8 in the Augments sections and see if you have made any changes to them.
They are, but not so much on Nexus itself, you should instead ask on the discord, they have an own section for modding and people can help you there: https://discord.gg/3YHnBZGHY3
I feel like this really needs to be bumped or stickied, for anyone who downloaded that so that if they google it or check, at least they get a heads up, because nexus is trusted so few people even would consider they would get a keylogger from here.
His enb doesn't use the tool in enb for unlocking memory, I suggest you download the 4gb patch. Just Google it and patch your game and see if it solves your issue.
You need to use the arctool from the nexus, and from there you have go find the map files in the game directory, they are unfortunately a bunch of them so u have ho assemble them.