In Minecraft Java, I cannot allowcate more than 3GB RAM, I have 64 bit Java and a 64 bit computer, I am in windows, I have 8GB RAM, playing sky factroy 4 modpack using new Curseforge launcher, simmilar to the Twitch launcher. How can I allowcate more RAM? I change RAM and it still uses 3GB RAM, I need to allocate 4GB RAM.
Have you checked if you have any other resource intensive processes running? I find that 8GB of RAM is not as much as it lets on, try closing any apps that you don’t need open (Press Ctrl+Shift+Esc to open task manager and press show more, then click the RAM heading and all the apps that are using the most RAM will filter to the top, click “end task” on ones you don’t need) that might give you an extra 1-2GB.