i'm not exactly sure what is cyclemultiplier is =) as i read somewhere in sources it's multiplier cause to make more that one instruction at time (and if no hard gpu load at this it will make emu faster)
it doesn't skip instruction or emu will crash all games =)
we get graphical issues due to frameskip, not cyclemultiplier (for me it's 100% true)
// My english is worst too, so sorry me too