Computers can play one-on-one Limit Hold ‘em pretty close to “perfectly”; a very good approximation to the Nash equilibrium strategy has been computed, and computers can follow it. The standard tournament game of no-limit 8-player Hold ’Em is a lot more computationally intensive to solve, though, and I don’t think computers are especially good at it.
Computers can play one-on-one Limit Hold ‘em pretty close to “perfectly”; a very good approximation to the Nash equilibrium strategy has been computed, and computers can follow it. The standard tournament game of no-limit 8-player Hold ’Em is a lot more computationally intensive to solve, though, and I don’t think computers are especially good at it.