DaemonUmbra

You need to use Java 8 with Forge for 1.12.2 or earlier. DiamondMiner I understand you're trying to help but this is a known issue that's not worth fixing when the workaround is so simple, and it's addressed in the EAQ thread.

At this point I think your CPU would be the bottleneck rather than the ram, what's your processor?

That's not a log, that's just copypasted from the launcher console (It should be about the same but copying from the launcher drags a whole ton of pre-formatted stuff with it that goes weird on the forum). Please read the "Logs" section of my signature below and provide the appropriate log in the appropriate manner.

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.

Don't post the text on the forum, pastebin will let you paste it into their site and GitHub's Gist service lets you outright upload the file, use those rather than creating a wall of text here.

Try without backpacks mod, that's the only one I see that I haven't seen before.

How did you start the server? Double clicking or through a bat file? Which file did you start?

Seen this many times coming out of an old version of Optifine, update. In addition: The filenames of some of your mods suggests you are not getting them from official sources, please read my signature for more info on why this is a bad thing. Next time before you blame Forge, maybe try loading the game without mods.

Sadly most tutorials you find on YouTube are absolute garbage filled with cargo-cult programming ("Do this because it works but I'm not going to tell you WHY it works") and often made by people who have just barely learned the system themselves. In Harry's case I have seen threads from him asking how to do things, learning as he makes the tutorial. (Blind leading the blind). The better tutorials you'll find are text based on GitHub.

Also note that Pixelmod is designed to work on a specific Forge build.

Locking because I tire of people complaining about this as if it's on Forge's end to develop Optifine.

The filenames of some of your mods suggests you are not getting them from official sources, please read my signature for more info on why this is a bad thing.

Issue with DamageIndicators, the name of which suggests you didn't get it from an official source, where did you download it from?

Info that is likely not relevant to the original poster's situation, make your own thread.

Bugs are not the only reason to make sure your mods come from official sources... How long have you allowed the game to sit before killing it? Do they have the same specs you do?

Please do not hijack threads, if you have an issue please make your own.

Please read the "Logs" section of my signature below and provide the appropriate log in the appropriate manner.

Update Java

Please read the "Logs" section of my signature below and provide the appropriate log in the appropriate manner.

The filenames of some of your mods suggests you are not getting them from official sources, please read my signature for more info on why this is a bad thing. Please read the "Logs" section of my signature below and provide the appropriate log in the appropriate manner.

Please do not hijack threads, if you have an issue please make your own.

Please provide a fresh log if that didn't work.

Two things here, you're running a mod that does not use Forge and you're using a version we don't provide support for on this forum anymore.

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.

Your file upload didn't work, but it looks like you may be running a resource pack your computer can't handle.