I've looked at your preset - firstly in terms of your question, I'm in the UK so still on the FM3
but check Leon's youtube where he recently showed how much power the FM9 has, honestly - amazing change.
In terms of this one on the FM3 - do you use both delays at once? Because if not that will make a massive difference to power.
When I loaded the preset it shows 84.1, if I combine the two delays (using channels on one delay block) I got the CPU down to 78-79% - because by reducing down to one delay you can get rid of the two lines and therefore the send/return. I also removed all the shunts.
Even if you want both delays, removing all the shunts saved maybe 1-2%
There's a lot of other CPU saving you can do, reduce the echo density on the Reverb - which with 2 delays in front you won't notice, pulling that down to 4 makes all the difference, shunts removed and echo density reduced and the CPU usage is 77% - no other changes.
Take that 77% and change the two delays to one gives me 75%
Or another approach
Take your current preset
Instead of using the TS808 in the drive block with the drive at zero, use the 808 in the pre-amp of the Amp block. This lets me get everything on one line (I delete the drive block), I do nothing else than that, and put the echo density of the reverb down to 4. And in scene 1 I have a CPU usage of 67%.
Hope this helps and sorry to thread/topic jump