This is what worked for me so far in my Samsung Galaxy S5:
Go to settings >> system >> About device.
Find "Build number" and click 6 times fast on it.
You will then get the message saying: "Developer is On"
Come back to Home Screen, and then go back to Settings >> system >> Now you will see the "Developer Options"
Now go to Developer options >> Hardware Accelerating Rendering >> Check "Force GPU Rendering".
This will force the phone to always use GPU for screen adjustments.