I recently had some issues with a few "higher" end games Shuffleshot and World Class Bowling Deluxe. The games would start and then have issues, slowness, sound problems, etc. I did some searching on here and it seems that the preference for video display mode is DDRAW. I made the change in my mame.ini but really haven't seen a difference in performance on those games. I am using a Wells Gardner D9200 monitor and a Nvidia graphics card, but it does not run Soft15 so I am always running at 640 x 480 resolution.
I did notice some other things that changed when I went to DDRAW. I was using cropped bezels on vertical games to help fill in the "black bars" on the sides. When I switched the bezels went away. I could only use them if I was in "Full" mode.
I also noticed that DDRAW was not good for my vector games. Asteroids, Asteroids Deluxe, Space Duel, etc, all started to have issues when I switched to DDRAW. There was sound issues, pausing, stuttering, etc.
So I have changed my mame.ini back to D3D. I did not see any performance gains, I missed having the cropped bezels and want to play vectors. I may change a individual game to DDRAW to test for better performance, but in general D3D seems better. I have considered giving a ArcadeVGA card a try at some point and try running at authentic resolutions and may need to go the DDRAW route then.
Have others experienced the same issues? What are most people using?