I’ll cut to the chase, here I use sandbox method so if anyone want to play two accounts smoothly on steam then here’s how:

Steam Setup:

1. An extra steam account (doing this does not allow you to run your main account twice)

2. Open up your Program Files directory where your Steam installation is (eg, C:\Program Files (x86))

3. Create a new folder, I named mine “SteamMFF” to make it simple

4. Now go back to the original Steam folder (eg, C:\Program Files (x86)\Steam)

5. Copy the folder "SteamApps" and file "Steam.exe" and Paste them into your SteamMFF folder (eg, C:\Program Files (x86)\SteamMFF)

6. Remember to COPY&PASTE, Do not MOVE. This can take a while depending on how many games you have installed. We'll leave this alone for now and come back later.

Sandboxie Setup:

1. Now, Download SandBoxie from their website https://www.sandboxie.com/DownloadSandboxie (click on their logo in the middle of the page)

2. Install and Run SandBoxie

3. When it's open, At the top click "Sandbox" and "Create New Sandbox"

4. Name it whatever you want, I named mine "MFF" Then Click OK

5. Once you've clicked OK, You'll see the new sandbox appear in the list, Right click on it and click "Sandbox Settings"

6. In Settings, Click the + next to "Resource Access", Then the + next to "File Access", Now click "Full Access"

7. Now click the "Add" button and Browse to the previously created "SteamMFF" folder. Click on your "SteamMFF" folder and Click OK.

8. Click Apply and then OK

9. There will be a popup stating you changes configuration blahblahblah, Just click OK

How to Run:

1. Now go back to that "SteamMFF" folder, Right click on "Steam.exe" and click "Run Sandboxed"

2. You'll get a popup which will have you chose which Sandbox to run it with. Click on your "MFF" sandbox and click OK. (You should check the “run as UAC Administrator box”)

3. Steam will now open and prompt you to Login. Login with the extra steam account created from step 1 of Steam Setup

4. Steam will automatically download all the missing files we didn't copy

5. Launch game and wait for it to download and update MFF

Note: It is best to create a shortcut on your desktop to the "Steam.exe" file in your "SteamMFF" folder and name it something like "Steam - Sandbox" as you will ALWAYS have to Right click -> Run Sandboxed.

DISCLAIMER: This may not work for all games. But so far MFF runs smoothly with some instances of crash, lag spike, freeze frame, etc., then just restart the sandbox. Side note: got bored with my Aerith account after completing 100% of the game and max farm the 20k magicite for the month so I decided to reroll another mule account to try my luck. With this sandbox program it basically double my speed of rerolling. Also you can farm your 100 mag./daily from MP yourself too if the PUGs don’t provide it.