JaariAtmc

Install and use this java instead. Do not use Java 8u261. https://javadl.oracle.com/webapps/download/AutoDL?BundleId=242044_3d5a2bb8f8d4428bbe94aed7ec7ae784

Forge 2854 requires you to use the Forge Installer. Rename the Installer as is. Do NOT extract/install.

Please provide a screenshot of your launcher window.

Your CreativeCore is quite outdated, I suggest updating that. https://www.curseforge.com/minecraft/mc-mods/creativecore/files

^For anyone wondering.

You need to download the Offline Installer (64bit). The online installer always downloads and installs 32 bit java.

Do not use the Universal for Forge 1.13+. Use the installer instead. ONLY rename the installer to modpack.jar. Do NOT extract/install.

"i had to force close my computer." And there's your issue. DimensionalDoors (the weird door portals in the overworld leading to a dark maze) dimensions tend to get corrupted if the world is suddenly closed. The fix is easy though. Go to %appdata%\roaming\.technic\modpacks\tekkitmain\saves and open your world save, then delete the Dimdoors/Dimensionaldoors folder inside there. You should be able to play your world again after that.

Download link for 8u51: https://javadl.sun.com/webapps/download/AutoDL?BundleId=107944

Install and use this java instead. https://javadl.oracle.com/webapps/download/GetFile/1.8.0_251-b08/3d5a2bb8f8d4428bbe94aed7ec7ae784/unix-i586/jdk-8u251-macosx-x64.dmg

Its not much performance vs performance thing, but more "is it compatible with what I run" thing. Thermos is slightly less old than Kcauldron.

Spigot is vanilla only. You'll be looking at Kcauldron or Thermos. Both have their issues as well.

"They're suddenly no longer working". Like, after you updated Forge? See my post history.

Delete java 8u261, install java 8u251.

It is supported now.

Did you rename the forge installer? Because Forge 1.13+ requires you to use the installer. ONLY RENAME IT TO MODPACK.JAR.

Don't allocate 5 GB RAM if you don't have it available. 7 GB same story.

Your pack link doesn't work. Did you delete your modpack? Your modpack.jar has two periods (modpack..jar), might want to remove the extra period. That would probably make it work.

Deleted dropbox file + Modpack link is incorrect.

Java 8u251: https://javadl.oracle.com/webapps/download/GetFile/1.8.0_251-b08/3d5a2bb8f8d4428bbe94aed7ec7ae784/unix-i586/jdk-8u251-macosx-x64.dmg

This dropbox file was deleted.

Eh, mine was at like 1400 with about 200 random points from myself.

Alright, since you are on Mac, downgrade java to 8u251. 8u261 has been causing a lot of issues lately. https://javadl.oracle.com/webapps/download/GetFile/1.8.0_251-b08/3d5a2bb8f8d4428bbe94aed7ec7ae784/unix-i586/jdk-8u251-macosx-x64.dmg Also, don't forget to fix your mainmenu.json, its still referring to the 1.12.2 pack. Also, at 3000 fps during startup, the pong game is utterly useless, as the speed seems to be tied to the fps. To be fair, that's how it used to be.

They have allocated 9 GB.

Please try again after disabling your texturepack.