Explaining != defensive. I just thought I'd give you an explanation rather than "The site loads like it loads." But I'll look further into ways to speed it up.Like I said, I'm just trying to give you a heads up in case there was an issue with the site's hardware/software and you weren't aware of it.
Guess the load times are normal, and understandable.
In fact, that's all you had to say from the start instead of being defensive.