Updating these instructions for 5.3.3+:
BASE REQUIREMENTS: This is an SKSE64 plugin. Therefore, you need to have the correct version of SKSE64 installed to use this mod. If you are playing the Special Edition (1.5.x), you will need the latest SE version of SKSE64. If you are playing the Anniversary Edition (1.6.x), you will need the latest preliminary AE build of SKSE64. If you don't have SKSE64 installed or don't know what SKSE64 is, STOP. DO NOT attempt to install this mod until you know what the hell you are doing. Go learn what SKSE64 is and why you might want it here. Recent installation instructions video here. Come back once you are better educated and have SKSE64 properly installed.
(1) RECOMMENDED: Completely remove all files and uninstall any previous installations of SSE Engine Fixes prior to starting.
(2) DO a fresh download, install and enable/deploy of the required all-in-one Address Library for SKSE Plugins with your mod manager. You will need to install the latest Special Edition (1.5.x) OR Anniversary Edition (1.6.x) version of the Address Library depending on which version of the game you are playing. If you're getting error 1114 or 617, it's probably because you don't have the Address Library installed or properly enabled.
(3) DO download and install the latest x64 version of the required Microsoft Visual C++ Redistributable for Visual Studio 2019 (on the linked page, it's the download that reads x64: vc_redist.x64.exe). Install it even if you think you already have it installed. Yes, it's a Windows install. Double click the downloaded file, follow the prompts, and yes you'll need to reboot. If you're getting error 126, it's probably because you don't have the C++ Redistributable installed.
(4) DO a fresh download, install and enable of Part 1 of SSE Engine Fixes with your mod manager.You will need to install the latest Special Edition (1.5.x) OR Anniversary Edition (1.6.x) version of Part 1 depending on which version of the game you are playing.EngineFixes.ini has been replaced with EngineFixes.toml in 5.3.3+. Open the UTF-8 encoded .toml file in Notepad to make your setting changes. You can delete the old EngineFixes.ini.
(5) DO NOT install Part 2 of SSE Engine Fixes with your mod manager. Instead, download it manually and EXTRACT the Part 2 zip, then copy and paste the 3 dll files from there directly into /steamapps/common/Skyrim Special Edition/. DO NOT simply place the zip file in that directory. DO NOT create a folder with the 3 files in that directory. DO NOT place the extracted files in your /Data directory.Part 2 is compatible with both the Special and Anniversary editions of the game.
OPTIONAL: If you are using Vortex, you can download and install Part 2 using the Mod Manager Download, but before deploying, double click the item in Vortex and change the Mod Type to Engine Injector. Then enable/deploy Part 2.
DO NOT RENAME your skse64 executables. If you have already done so, you will need to CHANGE THE FILE NAMES BACK to the original skse executable names. That means skse64_loader.exe and SkryimSE.exe. Skyrim.exe and adding an INI, as several obsolete guides tell you to do to get skse launching from Steam, WILL NOT WORK. SSE Engine Fixes needs the original skse64_loader.exe and SkyrimSE.exe file names and files.
If you want to launch from Steam, add skse64_loader.exe as a Non-Steam Game. If Steam is open you can also launch skse64_loader.exe from a shortcut or from the mod manager and still get achievements in your Steam SSE Library and the overlay. The original Steam SSE page will always execute the standard launcher, but you can still see your achievements and screenshots there if you launch via skse64 using one of these other methods.
If you are getting Error 193, you are running an Oldrim plugin and need to uninstall it and find the SE version.
If you want to verify that Engine Fixes is running ok, open your d3dx9_42.log in your SSE game folder. It should look something like below when Engine Fixes is running properly. Don't worry about the line reading "failed to search dll plugin directory" - this just means you don't have other plugins that use the \Data\DLLPlugins directory installed.
Spoiler:
Show
skse64 plugin preloader - d3dx9_42
exe path: X:\SteamLibrary\steamapps\common\Skyrim Special Edition\SkyrimSE.exe
loaded into SkyrimSE.exe or SkyrimVR.exe, proxying SkyrimSE d3dx9_42 funcs and registering preload hook
success
hook triggered, loading dll plugins (meh's loader)
failed to search dll plugin directory
DLLPlugin loader finished
hook triggered, loading skse plugins
found plugin "EngineFixes" for preloading
attempting to load found plugins
attempting to load "X:\SteamLibrary\steamapps\common\Skyrim Special Edition\Data\SKSE\Plugins\EngineFixes.dll"
loaded successfully and Initialize() called
loader finished
That is all.
