By computer standards, it's rather weak (roughly on par with Sungorus 1.4 = 2300 elo CCRL 40/4). But that should be enough if you want to play against it (unless you're a GM).
- Chess960 works, but only if the GUI uses Shredder FEN (ie. AHah, not KQkq).
- SMP works (ie. does what it's designed to do), but doesn't scale. So it's best not to use it for now.
- Relies on thread local storage, whose Windows implementation sucks. So it's going to be slow on Windows, and fast on Linux, Android, and (possibly) MacOSX.