Some other notes which may be useful,
(1.) If you are developing a mobile-only title, the temporal AA does not apply, and you can turn off anti-aliasing.
(2.) If you are developing a PC title you can switch to FXAA using the following setting in a post process volume: Misc->AA Method->FXAA (instead of TemporalAA). If you place this in a global post process volume, ie something with Post Process Volume->Unbound checked, then it will effect the entire map.
Switching to FXAA with (2.) is the best workaround currently.