With the increased array functionality in the AF 2018 update we recently started to use arrays more. They have been useful in several instances but we have found they seem to make analysis backfills drag significantly (backfills can take hours or even days) while other analysis backfills at the same time window finish in <5 minutes. When I evaluate the analysis in question the Elapsed Evaluation Time is 1.7ms which is a bit slower then normal but I wouldn't expect it to slow things down this much. Has anyone else seen this issue? Is there anything I can do?