Reasons for increasing heap
Since heap size determines how much memory is allocated exclusively to aPriori software, it can have a significant impact on how aPriori performs. If you work with a large number of very complex CAD parts, you will probably benefit from increased RAM memory and an increased heap size setting.
To determine how much RAM you should install and how large your heap size settings should be, please refer to “Basic Requirements” in the latest aPriori System Requirements document.