fridgerator

It doesn't work but I will remove the entirety of Minecraft from my computer and try to install only Forge. Thanks anyway you two. Here's to hoping shaders will be a thing soon.

I believe that, but I don't know how to remove Optifine as it is installed through the jar

https://pastebin.com/h3cuJ631

What do you mean? I posted the log in the first post, no? Or do you mean another log.

My Optifine is installed with an installer (there is no mod folder)

If you launch Forge, Optifine isn't even launched, correct? Optifine is launched through the Minecraft Launcher like Forge. It's either or unless you work with a mod folder as far as I know. How do I get rid of Optifine in this case?

That does not mean Forge should be crashing

My Minecraft crashes halfway into the Mojang loading screen. I have Forge 1.15.2-31.1.14 installed through the installer and have Optifine preview 1.15.2. That's it, no texture packs. I only want to run shaders, which don't work with just Optifine as of 1.15. The log is here: https://pastebin.com/TW9Sqra8 Launching through optifine still works.