To do this just delete completely the Trinity folder inside Plugins and install the latest one (2.14.13) which also makes the bot clear normal rifts faster too.
BUT after testing it quite a bit i found that the modification posted by Keetsune deliver faster clears in GR 60 and above.
What i did was to simply copy the whole DB folder and now i have 2 installations: one for normal rift without modifications on the files (the settings are the same as the ones posted here) and one for greater rift
Some day I am going to figure out why when I delete the trinity folder from the plugin folder and extract the newest into that folder, trinity doesn't show once I start DB.