So yea photon mapping doesn't handle biger scenes very well.
Glass is farily good (good caustics makes up for crap direct ilumination, I trace 5m photons every pass here, perhaps if I lowered that number I would get better direct lighting and antialiasing, but worse indirect lighting).
Photon mapping:
Photon mapping with direct lighting:
Path tracing:
As expected path tracing performs better, maybe some fine tunning (photons per pass and initial radius) would help, but I don't expect miracles.
