Resolution/Refresh Rate Relation

I read the refresh rate that was recently posted on here and wanted to know how to appropriately match resolution and refresh rate. Specs:

19" @ 1152x864, 60hz
.21mm Horiz DP
.25mm Diag DP

Text is pretty pixelated (best description) and changing the refresh rate just makes it worse.

Yup, there's no formula used or anything, you either got it or you don't got it.

Google your monitor and find your settings.