OPTIONS menu
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SET CONFIG - See CONFIG
PERFECT SYNC - Some SegaCD/MegaCD games will only run correctly if the two
MC68000 processors inside the console are perfectly syncronised. This
option enables this feature. Traditionally this type of feature requires
a lot more processor power, but Fusion is very highly optimised, and this
feature isn't usually noticably slower, so it should be ok to leave it
enabled all the time. If you do notice poor performance, or notice any
strange problems with certain MegaCD/SegaCD games, you may wish to try it
both ways.