Right it's more than zero, but I wouldn't be going into the double digits here. Because taking into account of where each person is on the ship, let's look at the layout of an ISD shall we?
Looking here, said Force User would need to target at the least 6 separate locations at once to effectively cripple the ISD to make it inoperable for combat.
1. Command Bridge
2. Primary power generator
3. Subsidiary reactor
4. Auxiliary reactor
5. Heavy turbolaser stations
6. Quad laser battery
Now the Turbolaser stations, there are 275 Gunners.
In a pinch however, Stormtroopers and Army Troopers could also operate the Turbolasers given their skill sets. So since an ISD carries a full division(Battlegroup) of Stormtroopers which is 8,192 Stormtroopers, the rest being 1,508 Army Troopers giving a grand total of 9,700 Troops on board.
So the Force User in question would need to target all of the systems, plus over 10k personnel at once or otherwise be killed by incoming turbolaser fire.
Which there isn't many capable of doing that.
Even if you take away the Troopers, the Force User would still need to target different sections of the ships at once and affect the crew members.
If The Force User just goes to focus on one thing, they'll get blasted even if they pull it off. Thus at best it becomes a stalemate.
EVEN then, the Force User would also have to pinpoint where these systems are on the ship from their position, going through a ton of machinery to even affect it, which again...there isn't many that could do that.