The best settings are the default settings.
which AMD driver are you using?
and what is the make and model of your system?
Default settings were very poor at 1280x720 (Software)
I tried D3D but the game was very jerky.
On OpenGL it worked for few days, but again started crashing in few minutes.
However, for the past 2 days the game is running properly (OpenGL resolution: 1920x720) from AMD Radeon Settings. Lets hope this works well.
System: HP Pavilion 15-ab028tx Notebook PC
AMD Radeon R7 M360 Graphics (2 GB DDR3 dedicated)
Thank you very much for you response. Any other suggestions will be much appreciated.