After pressing bet the rolling will keep turning for few seconds then the only result will appear. I even restart my PC and verified a couple of times still seeing a same slow betting issue. It looks like the server is slow down.
Its not only this website. Some of the other gambling sites are overloaded also and lagging. And most of the major exchanges like Poloniex, Bitfinex, Bittrex are also laggy and have both deposit and withdraw delays.
Basically huge adopting to the Bitcoin ecosystem and nobody upgraded their servers.
Even Bitcointalk lags from time to time.
But if you look at above Baryom comment. This issue may be unique to this site because they were working at server side to upgrade something. So it may not be related other worldwide traffic increase for bitcoins. Because I too had faced this kind of rolls freezing issues in the past but I didn't try today yet.
Today, roll looks good for me, it works as expected. But as I saw in chat box, some people mention that they got laggie roll. Idk for sure what was happen but I guess their lag's rolls caused by their connection or something that beyond my knowledge.