This may or may not be a fault with VDE, but any help solving my issue would be great.

I have 60,000+ users I want to export. Each with 60+ profile fields.

However, it takes well over an hour to do this (via batched export). I assume it's to do with the number of joins over all the "field_data_field_*" tables. and/or indexes.

Can you suggest a way to increase the performance on this. e.g. Should there be an index on each of the "_value" columns in the "field_data_field_*" tables?