joinski
Hi, thanks for the answer, I tried for 4 days v31, it was working ok, but suddenly, sometimes I had random slowdown in some games (from 60fps to 25fps on dreamcast, naomi, psp and n64, the n64 games works ok-good only WITHOUT LIBRETRO), so I decided to rollback again to v29 due to my problems, I will try in a future with a high overclock with a good fan and sinks, thanks a lot again for your answer!
I use audio jack connected on my tv, not directly from the rpi4.