If on each ToolStipMenuItem element ToolStipMenuItem write some text in the tooltiptext property, sometimes when you hover the mouse over the last element, it starts blinking and then showing ToolTipText or not, and it is problematic to click on it. When I ToolTipText on the last element, everything becomes normal, but for me this is not a solution. What to do?

Or you can change the time after which ToolTipText appears? I mean to change the time after which ToolTipText appears?