It depends on if your TS2 is 9mm or 40 S&W? It also depends on what type of ammunition you are shooting? Are you shooting light target loads, NATO loads, or self defense loads? Lighter loads will warrant a lighter recoil spring, more powerful loads warrant a heavier recoils spring.
The stock weight for the 40 S&W TS variants is 16lbs. I run 16lb Wolff recoil springs in my TSO's. I run handloaded Major PF almost exclusively in my TSO's.
I don't know the stock weight for a 9mm variant. Call CZ USA and they will provide the correct answer.
You should be able to run 10-18lb recoil springs in the TS2 without issue it really depends on what you are shooting and how sights return to alignment post shot. You want the spent case to land 6-8 ft away and you want the muzzle to not dip upon returning to battery to allow for the fastest follow up shot.
TS variants use the same type of recoil, main, and firing pin springs as the standard CZ75 variants.
Cheers,
Toby