Under the Misc tab you can find some advanced settings. You can leave them on default values in the most cases.

The slider settings section contains hidden options which can be displayed separately. The main goal is to remove clutter from the user interface, since these options control overly specific features, or they meant to be used by experienced users. You can display these options with the switch on the upper right corner. These parameters will be marked similarly, as this text in the whole documentation.
Misc settings
Misc settings

Use srcset attribute allows to load dynamically scaled image, to save bandwidth, and able to show retina-ready images on the capable devices.

By using some transitions nad transformation is not possible to resize the elements on the fly. In those cases the Allow restarting slides on resize will help to handle that situation.