Hi there berkay53,
Thanks for joining us in Apple Support Communities! We understand your MacBook Pro is performing slowly when playing a game or using editing software. We're glad you're here, and we can provide some guidance.
"If your Mac notebook computer is slower than expected when you perform graphics-intensive tasks, such as playing games or editing video, open Battery preferences. Depending on your Mac, you may see options that let you improve graphics performance in exchange for greater power consumption." Learn more here:
If graphics tasks slow down your Mac
Also, you may find these links helpful:
If your Mac runs slowly
Set graphics performance on MacBook Pro
Let us know if you have any more questions.
Take care!