> 2 more frames compared to d3d9. 3,5 more frames compared to GroovyMAME d3d9ex. That's > a huge difference almost 60ms. It's a pitty as I like the filters in bgfx very much, > but cannot use it with such a huge lag. I've spent few nights digging through the > sources and trying to solve that mystery, but I ran out of ideas.
Was vsync enabled for those other modes? Compare with other modes with vsync enabled. I suspect what the problem is. ALSO toggle triple buffering.