Ok, the problem is that, the # of raising "OnClick" event handler on the client side jQuery for actions of each row. It seems like currently the OnClick event handler takes places for every row in the grid times the number of OnClick actions times refresh times. This combo uses a lot of memory in the browser and Support needs to change how the raising Onclick event handler is implemented for each row.
So, if you have 20 rows and 6 actions (5 plus a drop down), that is 120 OnClick event handlers in memory. You multiply that by 60 refresh, that becomes 7,200 OnClick event handlers that page in memory. That WILL slow it down greatly.
I think When Version introduced combining a rows action into a single drop down, this bug was introduced.
Note: If the OnClick event handler is implemented when a row is selected and not when created at server side, then it will eliminate this problem.
