Region as in NTCS or PAL (sry, should have sayd that)
I had a quick look at the 'FpseCE Official Compatibility List
' but it doesnt mention Crash Bandicoot 3 (unless thats listed as trilogy)
You could try to run it without a bios, fpsece (since recently) actually no longer needs a bios
if that doesnt help (and honestly, im not to sure it will) you will have to dive into the ini file (fpsece.ini in the directory where u installed) and see if any of the patches help.
You could also try to run the game on a pc based psx emulator (to see if your image is good)
I understood a full fpsece.ini documentation is beeing worked on, so if you dont get it working now, remember that, there should be extensive info on every detail of the ini soon.
And lastly, you should really try at least a few games, i guess your a big CB fan, but you/we cant really expect schtruck to test all psx games out there, so even though its sayd to emulate 100%, it might not for every game (though hey, he reads his forums ofc, if in the end it turns out to be fpsece related, im sure he can fix it)