Dragging and dropping cards on the board has been super slow on both the board for a while and the list view. The the card movement lags behind my dragging actions and it continues to move very slowly seconds after I release the mouse button. It looks like it is slowly processing hundreds/thousands of move events that are being queued up. I use Firefox nightly builds and this affects all recent builds in the last three months and probably before that.
Expected behavior would be for this to be 100% lag free in all modern browsers.
This is completely unusable in its current form. I work around it by going to the card details and selecting the right section from the drop down.