I have the exact same problem. It seems the more items I add the slower the cursor moves. Freezing at least twice a day and the java platform binary is also "hogging" the resources. When it freezes, I shut it down through the task manager, restart and then it works for a few hours. I have the updated version on Java as well. It's been 4 months since the last comment, so I am hoping there's an answer by now.