And if indeed the Casino site is not lagged or has a good PING between his Server <-> yourself
A good PING does not guarantee you a smooth experience, because some sites have poorly written code and this makes the
DICE experience slow, no matter how fast their internet connection and yours are. OP, why is the speed so important to you?
I know some people want to use bots and scripts and they need a fast reaction time from some of these sites. Is this your
reason for asking? {Remember some sites have bot detection, so your account will be blocked, if you use bots.}
He's online but very inactive.
On topic, I don't see much difference among dice sites they do only differ if you do set out some animation on or off. They might differ but a millisecond gap which isn't really an issue at all.