You should activate the flag to force p96 to use fastram for all bitmaps (with PVS for example)
Ah, thanks for jogging my memory. I had decided that either P96 worked like that or that I had broken something.
That's a very interesting thing to try.
UAE*Picasso96 driver doesn't use the graphic card directly like Amiga or Amithlon, it draws everything in the pc ram and later it copies the data to the viewable area so you will never get as much acceleration as a modern native P96/CGX system using a Radeon gfx card for example.
Luckily those parts of Amithlon are still mostly available if you look at the kernel patches and the AmigaOSXL source code. They are pretty straight forward, if not really optimal.
I was thinking of using the Haiku Game Kit or DirectFB on Linux so that it could take advantage of those projects development and their work on hardware acceleration.
I've become side tracked with my real Amigas lately, but that project is still very much on my mind.