I have 2 APE's in my current environment. One of them consistently is really slow to list out List Resources. Sometimes it just sits there forever. If I move the device to the other poller, List Resources works as expected. If I move the device back to the original (slow) poller and do a List Resources, it now seems to work as expected.
Does anyone have any suggestions on what I can do to improve the List Resources on the 'slow' poller? This is what my environment looks like.

The slow poller is first additional poller listed in the above list.