Too Slow With Geforce GTX275 448bits 896MB

I´m trying to run Saturn games but its are too slow, like with no gpu acceleration.
There are any config i can do to get better results?

Nintendo 64 games run very great, with zero lag.

Processor AMD PHENON X6 2.8GHZ 9MB CACHE
8GB RAM DDR3 1333
GPU NVIDIA GeForce GTX 275 448bits 896MB
Power 750W Corsair

its normal, saturn is a bad emulated system, its not the fault of batocera team, its fault of yabuse emulator core.