I printed a few pieces out of Polycarbonate for our robotics team. Was attracted to its purported strength. While the plastic itself might be quite strong, the layers do not adhere to each other. It fails easily under torsion or shear. Even PLA held up better than PC. Also tried ABS and Nylon, which were superb.
It is very prone to moisture contamination and extremely difficult to print correctly.
I have found it very strong and ok to print. The problem I have is on larger pieces the warping. It certainly sounds like something is up on your layer adhesion.