Translations:Performance Optimization/20/en

For single player, or clients that are connecting to a server, a maximum of 2GB is recommended, but you are encouraged to adjust as necessary. The best way to see what will likely be a good maximum for you is to turn on the Minecraft Debug overlay using F3. In the upper-right corner you'll see what percentage of memory is currently used. Generally speaking, you should aim for keeping that number below 75%, and ideally it should average around 50%. Allocating too much memory to Minecraft can surprisingly cause just as many issues with lag spikes as not allocating enough.