Easy, Med, Hard DCs for Starfinder

[VampByDay]

So, I'm running a home game right now, and I have no problems coming up with (what I think are) cool and interesting plot points and cool ideas, but one thing I'm terrible at is the crunch. I tend to make the DCs either way too easy, so that it's not even a challenge to pass, or neigh-unattainable so that the PCs constantly fail.

Something I really like from Pathfinder Society is that certain scenarios list DCs for easy, medium, and hard skill checks based on level (or short level range). So I'd like to use those DCs, but since Starfinder has different skill modifiers (skill focus generally doesn't stack with other abilities, stats are generally a bit lower) then I don't know what DCs I'm looking at.

Closest I could find are the Trap DCs, where detecting a trap seems to be a very difficult check (DC 20+1.5 times CR) and disabling it is difficult (DC 15+1.5x CR).

Any other thoughts? Would an easy check be 10+1.5xCR? Are those checks too difficult?

[Metaphysician]

Well, thinking about it like this. A level 1 PC is going to have, for skills they focus on, a bonus of something like +1 ( skill rank ) +3 ( class skill ) +2 ( ability bonus ). It can be higher, perhaps a *lot* higher, if they are specialized more heavily or the right class ( bigger ability bonus, extra bonuses from race/theme/class/feats ).

Still, even that +6 total is going to succeed at a DC 12 check about 70% of the time. So yeah, 10+1.5xCR probably would count as easy. A Very Difficult check would only work 20% of the time, but the usual assumption would be:

1. The PCs are supposed to accumulate situational bonuses to achieve that goal ( ie, acquire equipment or information, work in teams with Aid Another, etc )

2. The PCs are supposed to have a specialist do that check ( ie, its fodder for your team Operative, or at least non-Soldier/Solarian depending )

3. Its an optional objective that the PCs are not required or expected to pass in order to win the scene