zsnes: 100% cpu utilization when active; pci joystick port and 5.x

[Esaltato]

5.2.1. Just installed the port, no cpu optimizations. If I put the mouse 
cursor on zsnes window, even if no game is loaded, cpu % reaches 100. If 
I put the mouse off the window, cpu % comes back to normal. If other 
apps are open during play, being zsnes windowed or fullscreen, gameplay 
is normal (100% cpu) but every 5 seconds there's a nasty stall, so most 
of the games are no fun (try this in the middle of a mario jump :oD ). 
If it is the only running app gameplay is good.

While I'm at it, is the patch for joystick midi ports inside PCI audio 
boards in 5.2.1, if not will it ever be part of the system?
URL http://twomix.devolution.com/pipermail/sdl/2003-May/054289.html
My dream would be to play with my playstation joypad parallel port 
adapter (DirectPad Pro), it's supported in Linux.
URL 
http://groups.google.com/groups?&selm=2nkor-2ek-23%40gated-at.bofh.it&rnum=1