This way involves “Debugging” Safari.
Close the Safari app
Open the Terminal App by going through the Applications and Utilities options
Enter the command: defaults write com.apple.Safari IncludeInternalDebugMenu 1
Relaunch Safari and look for the “Debug” menu bar that should not be visible on the screen
Click on the “Debug” option and choose “Compositing Flags”
Choose two options: Disable Canvas Accelerated Drawing and Disable Full Page Accelerated Drawing
Note: If that does not work than force-quit and open safari holding the shift key.