You can use 'Optimize for filtering' wizard which appears when you right click on a property, sometimes running this wizard can be costly in terms of performance you may experience some system slowness. So you can use column populator utility 'prpcUtils' as an alternate option which is available in your 'PRPC_media/scripts/utils'. To run this utility you need some understanding about the ant scripts but I am sure you will figure out a way J  Nevertheless you can go through README.txt file present in the same location as mentioned above.

Please refer to this PDN article - https://docs-previous.pega.com/troubleshooting-repeat-grid-enable-paging-does-not-display-all-rows