If you are playing on PokerStars then please make sure you are saving and importing PokerStars tournament summaries
as well as the hand histories. If you that's not the problem then please compress
the hand history/tournament summary files for any tournaments which don't work for you and attach them to a Support Ticket
. By default PokerTracker 4 moves your processed hand histories to your \PokerTracker 4\Processed folder which you can access via the "File -> Open User Data Folder" option.