Could you please add an option to make PT4 import in the same manner as PT3, ie, import hands very quickly, then run housekeeping? I import 500k hands a day, and with large imports, PT3 is far faster than PT4, even when taking into account the housekeeping time.
I plan to continue to push for improved performance behind the scenes but it's not easy to make a reality. If there were a magic "make it faster" button we'd have pressed it a long time ago . . .