Forms :: Continuous Subform With Conditional Formatting (Access 2007)

I have a continuous subform with a fairly complex snapshot query as its record source. I have controls on the main form to allow criteria parameters for the query and a command button to requery the subform based on the selected criteria. I also have conditional formatting on a number of the continuous controls in the subform (the conditions are fairly straightforward, i.e. highlight if null, true/false etc)

When the subform is (re)queried, it seems to repaint several times (3 or 4 although it appears arbitrary to me) before it eventually settles. And it really louses up the aesthetics as controls flicker between colours; sometimes I even lose the background colour on parts of the detail section, or controls disappear altogether. And this continues as I scroll down the subform (or even click anywhere on it)

I don't mind that the query itself takes some time to run - of the order of a few seconds each time - but I'd prefer for the screen to wait until the query is completed, and all of the CF applied, before refreshing itself, instead of 'sweeping' top to bottom repeatedly. It's a snapshot query so once it's run, there should be no changes to the dataset.

I've tried Application.Echo but it has no effect whatsoever.