>>>When you use the up and down arrow keys to navagate through records, the colored row lags noticebly behind. My question refers to: Does it matter what color, if the columnsources are calculated will that slow navagation further, use lockscreen or not ... etc. Thanks
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>>Yes, i did notice this behavior also.
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>>Is there any way to avoid this 'trailing behind'
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>If you use Beforerowcolchange instead of After..., you can remove the lag of the selected column/cell. However, it's somewhat tricky to work with, and I never did get it to work correctly with the pageup/pagedown keys (not that it can't be done, I didn't spend a lot of time on it).
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>Basically, you need to put SKIPs in the Grid Beforerowcolchange before you change the colors with this approach, you move the pointer programmatically from the keyboard input...

I use Beforecolchange to block unnecessary reevaluation when just column changed. Again about 'row trailing', the best idea is to teach users to use scrolling instead pressing arrows. Also, grid is not the best place for heavy data-entry.