I can't seem to complete this instance. I'm trying to do it on my griffon because it's the only mount I can control well enough to keep ahead of the storm, but that only works for me until I need to take the left turn right before the purple crystal-looking thing on the rock ahead. No matter how fast I complete the first part, turning left causes me to get caught in the storm and die. I don't know what I'm doing wrong. Anyone know how to avoid the purple storm once I turn left?