Noticed a few data base related hangup. But fine on tablet which is slower than a faster pc.
When you click post it has to query the db (data base) then it has to create a spot on the table. Your post or most of it is already saved on the server as you type. internet speed is not the issue as pages load pretty quick.
This db has been around since I been here 2008. Has had major fixes to it, and has tons of information on it.
It might need some house cleaning again. I have noticed a few threads messing quotes up and taking some time to post which is a sign of some tables with wrong columns or something.