How can I change the amount of RAM and number of CPU cores allocated to BlueStacks to improve game performance?

Here are practical and up-to-date recommendations for adjusting RAM and CPU cores:

Open BlueStacks settings

Click the gear icon → go to the “Performance” section.

Changing the number of CPU cores

In the CPU setting, choose how many cores BlueStacks can use.
It is recommended to allocate 2–4 cores if your processor has 6–8 cores.
Do not allocate too many — Windows also needs resources.

Changing the amount of RAM

In the Memory setting, choose the recommended value or enter your own.
Usually, 3–4 GB is enough for most games.
If you allocate too little, games will lag; too much, and your PC may slow down.

Switching performance profiles

The High Performance mode gives maximum speed but increases load on the PC.
If your cooling is weak, monitor temperatures.

Restart BlueStacks

Always restart the emulator after changing settings so the changes take effect.

When increasing resources makes sense

– if the game lags or freezes;
– if you want smoother FPS;
– if the app has high graphics requirements.

If BlueStacks performs worse after increasing resources

Return to the menu and set balanced values.
Your PC may not handle maximum load — avoid assigning all available RAM and CPU to the emulator.

If you adjusted everything correctly but BlueStacks still lags or freezes, be sure to report it on Xolvie — this helps push for improvements and bug fixes.