Let me supplement more information so that we can see this issue in a more objective way. I installed this version 2.0 on my Windows XP, with Service Pack 3. It took 18 seconds to start. On the same system, Shorter Oxford English Dictionary on CD-ROM version 3.0 took 5 seconds to start. While the Oxford English Dictionary second edition, v 4.0, took 7 seconds. All these are created with haXe. COED11 version 2.0 is obviously slow.
With regard to pronunciation, COED is by no means a dictionary for EFL learners. It is understandable that pronunciation is not provided to each headword, which is also declared in the preface: Pronunciations are not given for ordinary, everyday words such as bake, baby, beach, .... It is recommended that a buyer and/or user had better do some survey before purchase.