IPAD BLUEFIRE issue

[Jesver]

I used iPad 2 with IOS6 and the latest version of the BlueFire. When I'm open my epub file via bluefire reader at IPAD 2, it's open very slowly. The epub size is 5.41 MB and HTML file size is 3.19 MB. If I delete some html file in that e-pub file, the file open regular timing in IPAD-bluefire. Could anyone please solve this issue.

Note: But this problem is not occur in samsung galaxy tab bluefire reader.