Here is the work-around to turn off the GPU. Credit to PeytonPlaysMc
- Boot into Recovery Mode
Hold Command+R+S keyboard buttons while pressing the power button - Disable System Integrity Protection (SIP)
Type on the command prompt
csrutil disable - Reboot MacBook Pro into Single User mode
Type on the command prompt
reboot
Then hold Command+S keyboard buttons - Hard disk check
Type on the command prompt
/sbin/fsck -fy - Mount root file system in read-write mode
Type on the command prompt
/sbin/mount -uw / - Make a directory to save the AMD drivers
Type on the command prompt
mkdir /AMD_save - Move AMD drivers to the save directory
Type on the command prompt
mv /System/Library/Extensions/AMD* /AMD_save - Delete AMD driver cache
Type on the command prompt
rm -rf /System/Library/Caches/com.apple.kext.caches/ - Create AMD drive cache directory
Type on the command prompt
mkdir /System/Library/Caches/com.apple.kext.caches/ - Force refresh of drive cache
Type on the command prompt
touch /System/Library/Extensions/ - Reboot MacBook Pro to normal mode. Graphics will run slow at this point
Type on the command prompt
reboot - Boot into Recovery Mode
Restart MacBook Pro while holding Command+R+S - Enable System Integrity Protection (SIP)
Type on the command prompt
csrutil enable - Reboot MacBook Pro to normal mode.Type on the command prompt
reboot - Launch Terminal in UI and type
sudo nvram fa4ce28d-b62f-4c99-9cc3-6815686e30f9:gpu-power-prefs=%01%00%00%00
- Restart MacBook Pro one final time