DaemonUmbra

1.7.10 is no longer supported on these forums due to its age. Please updated to a modern version of Minecraft to receive support.

Why don't you try from the low end rather than the high end, unless you have a godlike CPU more RAM will cause more stutter when GC runs

Use a modern version, 1.11 or later.

Don't do that... You need to leave ram for other programs that are running

How much RAM do you have in your machine? How much of that is actually available (not being used by other programs)?

You did not attach your logs, please use Gist or Pastebin, it's easier. (For more information check the log section of my signature)

1.7.10 is no longer supported on this forum due to its age. Please update to a modern version of Minecraft to receive support.

Try without better foliage

It should not be possible for the launcher to even try to download Forge's jar, it is packed into the installer. Try this, go into C:\Users\[Your Username]\AppData\Roaming\.minecraft\libraries\net\minecraftforge\forge\1.10-12.18.0.2000-1.10.0 if there is a forge jar file in there, delete it and rerun the installer, if there is no forge jar or this folder does not exist, run the installer from the command line and post the output as well as the launcher's log.

You must use Java 8

What site did you get the installer from? Please provide a full URL.

You should not be running the game from command line, every launcher should have a console available, I can confirm this for MultiMC and Mojang's launcher(though Mojang's launcher requires you to enable showing the console). Please read the log section of my signature and post the appropriate log in the appropriate manner.

Try deleting the libraries folder and running the installer again.

Try the non-windows installer

You appear to be missing a library, how did you install the server?

Try without Optifine

Are you sure that your server directory was the active/working directory when you typed the command?

1.7.10 is no longer supported on this forum due to its age. Please updated to a modern version of Minecraft to receive support.

The installer creates a log in the folder where it is, the log will be [name of installer].log

You have 4 separate versions of Optifine installed, each made for a different version of Minecraft.

We don't support versions that old on this forum. Please update to a modern version of Minecraft to receive support.

Can you post a new log?

I believe it was changed to setTranslationKey in Mapping Version stable_39

If you are new to modded minecraft please check out http://stopmodreposts.org and install their browser extension. The safest and most reliable source for mods right now is CurseForge, though some mod authors insist on using their own sites. The site you linked should not be used under any circumstances.

1.7.10 is no longer supported on this forum due to its age. Please update to a modern version of Minecraft to receive support.