Not sure what HDR software you are using, however, you may wish to revisit some of the sliders, especially when you have high contrast areas, like sky boundaries. You have introduced a lot of haloes, ie around trees.
Another hint is to use the 32-bit HDR engine to simply process the 14-bit data to a more balanced, ie flatter image and post proces in a 16-bit environment, eg photoshop. That is use the HDR software to create a secondary digital neg.
Finally, try processing to a (flat) 32-bit file and finishing off in, say, LR.
Just some friendly feedback.
