Looking at the program guide grid is slow when there are many channels

Anytime I go to http://dvr-xxxx.local:8089/admin/guide/grid I have to wait for the browser to load 17M of data - twice - via http://dvr-xxxx.local:8089/devices/ANY/guide, the data after compression is 'only' 1.5M according to dev tools in chrome. For some reason all of the metadata about the recordings future, current and past is loaded as well.

Could we do something to speed up the process?