By giving Minecraft more memory or allocate memory, you give it more resources to work with. This can help the game run more smoothly and make it less likely that you’ll get the “Out of Memory ...

Step 2: Under the "Game Specific" subheading, select Minecraft. Step 3: Scroll down to find the Java Settings category. Use your mouse to adjust the slider bar to allocate more RAM to the game.

Select "Minecraft." 3. Scroll down to "Java Settings" where you'll see "Allocated Memory" with a slider. From here, simply drag and drop the orange ball on the slider to your preferred RAM allocation.

Go to the Java/Minecraft tab from the new window that opens. The first option, "Maximum Memory/RAM," can be altered by using the two arrows beside it to change the memory allocation (in megabytes).