Hi,
In following page it's said that Jira software boards supports until 5000 issues:
"Boards can display up to 5000 issues at a time. If your board is trying to display more than 5000 issues at once, you'll receive an error message, and be prompted to update your filters."
Just curiosity, do you have boards with thousand of issues? how do you handle that kind of board? could you share your examples of big boards?
A board with more than 100 issues is crazy, even if you use filters, quick filters, swinlines, colors, etc...
Best regards!