Hi Jun Tan,
we'll probably need some more details to figure out what's causing the bad performance of your process.
Since you're saying the process only takes 2-3 minutes when using IE, I assume that it's not in general a bad performance of the web application itself.
What about if you perform the steps manually using Firefox? Does it take much longer than using IE?
If not, which spy mode did you use to identify the elements of the web application in your IE object vs. your Firefox object?
I'm not really familiar automating processes using Firefox, but I'd assume the spy modes would be similar to the IE options (HTML, UI Automation, Active Accessibility,...)
Cheers [FirstName]