Nope. The system uses plugins which have some issues on certain cards. Trying to isolate what the problem is can be near impossible with the insane number of video cards, drivers, etc. out there. Thus far, the only common issues I've read about are ATI cards which have trouble doing a lot of things. Remember, Dreamcast and NAOMI emulation is still pretty early when you think about it. Give it some time and it will all be worked out.