Mobile optimization has become the main deciding factor for most modern players because nobody wants to sit in front of a desktop computer just to spin some reels. A properly built web application should load all assets within two seconds and compress the live stream data so it does not drain your monthly cellular data package. I always check if the mobile version allows you to access the complete list of live dealer tables or if it only displays a limited selection of older video slots. If the mobile layout feels clunky or makes your phone overheat, it usually means the operator is using outdated software that is not worth your time.