We have a client that is having performance issues with Trello. I saw the below KB. Does the 1000 open cards include what the user has filtered out of view?
Because Trello has to load open cards and attachments every time a board is opened, boards with a large number of open cards may see slower load times and generally reduced usability. We suggest having fewer than 1,000 open cards on any Trello board (and under 500 if there are a lot of attachments or checklists on the cards
