WowAce

HI- I pulled the Herb/Mine data for TWW zones from wowhead and imported them into GatherMate2, however now my client is lagging like crazy when the nodes are displayed on the minimap. I'm assuming this is because of all the possible variations of the herb nodes (Sporefused, Irratiated, Crystallized, etc.) overlapping each other.
I tried a database cleanup to remove similar nodes, but it doesn't detect those variations as being the same node (even though theyre all Mycobloom, for example).

Can anything be done to improve client performance with the large node count?