This feature is experimental. It may be changed or removed in a future version.
Returns whether optional requests should be avoided where possible.
We assume the user wants to avoid requests if either of following applies:
up.network.config.badRTT
.up.network.config.badDownlink
.When Unpoly detects a slow connection, some defaults are changed to more effectively use the client's limited network resources.
Whether requests should be avoided where possible.