Hi there,
Thanks for sharing the document. We have compared the attached documents using Aspose.Words v17.1.0 and have managed to reproduce the same issue at our side. For the sake of correction, we have logged this problem in our issue tracking system as WORDSNET-14792. You will be notified via this forum thread once this issue is resolved. We apologize for your inconvenience.
Steven Lam:
I also notice that Document Compare has performance issue on the big document contain 400+ pages. I have seen the delay on it.
Please note that performance and memory usage all depend on complexity and size of the documents you are generating. In terms of memory, Aspose.Words does not have any limitations. If you're loading huge Word documents into Aspose.Words' DOM, more memory and time would be required. This is because during processing, the document needs to be held wholly in memory.