First time poster, long time user here.

Device #1: iPhone 6 Plus iOS8 v.8.1.2 Client="Mail"
Device #2: iPhone 6 iOS8 v.8.4 Client="Mail"

I'm having issues with an E-mail for a client. On Device #1 it renders like a dream. Fast and within one second. But On Device #2 the mail takes about 7-8 sec. to display when opened.

I've testet on a iPhone 6 iOS 9.0.2 and having the same problem.

Is this a general problem or should I ask my client to buy an Android ;)

I'd like to hear your input.

Kind regards