Pre-caching is a common feature of satellite internet (and other internet service providers may use it too) to artificially speed up the internet connections. It may be called “web acceleration” or “turbo” settings. This feature is incompatible with our content filter and other software the district uses. The most effective way to disable the pre-caching feature is to call your satellite provider.
If you want to try to disable this feature, this may be some assistance, https://getsatisfaction.com/hughesnet/topics/can_i_enable_disable_my_web_acceleration_myself