It occurs with the Beta 2830 patch and the 2726 release; it happens with the nVidia card (332.21 and 337.50 beta drivers); and it definitely happens with the HD4600 using the current 10.18.10.3496 driver. As far as I can tell, this bug is universal and may finally point the way to the solution to the i7/GTX7xx delay problem.
Here's how to check if it happens on your system:
1) Open a new project
2) Go to the Particle Room and pull the 01_Star effect onto any timeline track. (02_light, 03_flare, 05_Bubble, 08_Cloud also have this behavior, but many other particles do not)
3) Using the scrubber, left-click on the right edge of the particle clip and hold the mouse button down while you drag the clip's ending point farther to the right. DO NOT release the mouse button, and just keep sweeping the right edge back and forth on the timeline. very quickly the clip and scrubber should freeze and they will no longer follow the cursor.
4) Once you release the mouse button, it will take several (or many) seconds for the scrubber to become live again.
5) Repeat the steps, and the clip should always freeze and take a long time to recover. By the time you've experienced 6-10 freezes, it may take 30-40 seconds to fully recover

If other people can easily duplicate this issue, then Cyberlink should easily be able to determine A) why the program freezes when resizing one of these particle clips; and more importantly, B) find out where the program goes when it is stuck for such a long time. That's the key to the other problem.
I'm very optimistic that the solution to quickly recover the focus from this issue is strongly related to the excruciating delays experienced by the Haswell i7/GTX7xx crowd. Please, PLEASE test this and let me know if you see the freezing problem or not.
Thanks very much!

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