Freezing/Crash in New Content

Ever since the 2.1 Patch I've been having crash issues, but only during the new content. I've tried updated my graphics driver and lowering settings, but they don't seem to resolve the issue. I've been able to isolate the issue to the following fights:

-First and Second boss of Haukke Manor (Hard Mode)
-Second Boss of Copperbell Mines (Hard Mode)
-Second Boss of Pharos Sirus

The issues start up when the AoE phases of these fights begin. Reproducibly, the following will occur:

-Sound Effects/Music cuts out
-Controls become unresponsive, or lag
-Crash-to-Desktop (Unexpected Error (2)(17))

It's worth noting that Garuda EM gave me no issues. I have not tried Crystal Tower yet. As I mentioned I had no issues prior to the patch and it only appears to happen in the new content.

If anyone is having a similar issue or can direct me to a related thread (I did not see anything related from a search) I'd appreciate it. As you can imagine this is quite frustrating.

sorry to hear that, maybe am having the same problems and am confusin it with connection problems... cause i have a 60 mb speed and idk why am getting disconnected everytime am in a dungeon... thanks to the new patch..... i guess i need a new computer

Still having issues. Some more encounters to add to the list:

-Good King Moogle: Starts lagging pretty badly after the adds spawn. Reducing settings helped a little.

-Crystal Tower: Second Fight it lagged a little bit. Final Fight lagged horribly.

Lowering the setting (including resolution doesn't remedy this issue. Would appreciate any help or at least an explanation of what "Unexpected error (2)(17)" is and what causes it.

This issue is making many of the new instances unplayable due to CTDs and unresponsiveness. It only occurs during fights with a lot of AoE effects (2nd Boss of Haukke).

Still having this issue. I just upgraded my RAM from 4 GB to 8 GB with no improvement.

Here are my system specs if this will help:

Phenom II x3 710 2.6 GHz
XFX HD R7850 2 GB
8 GB DDR3 1333

Is anyone with similar components having issues?

Hardware issue. I began having similar issues (freezing, hanging etc.) running other programs so I believe my motherboard and/or CPU were dying. After replacing my Motherboard and CPU I've had no issues and everything appears to be running smoothly.