Everything should be quicker; I mean from loading the game to responses from customer-support must be quicker. We are all at gambling sites to find entertainment and making us waiting for more than expected/usual time must be annoying for any gambler. I support fun-seeking gambling still customer support is more important when gambling sites are dealing with actual hard-earned money.
Sadly depending on the chain, the betting can be pretty slow if it's not centralized. At least in the sites i've played on. Luckily it doesn't affect anything else being slow.