Other than using Satconv (
DOS or
Win32) to change the region code to suit your Saturn, there's not much more you need to do.
There are some games that have been optimized to run at full speed and/or full screen on a 50Hz PAL TV, but not that many.
When using Satconv look at the product code. If it's MK-8xxxx-
50 or T-xxxxH-
50 chances are good that it's PAL optimized. While all Euro games had that type of product code on the box, I believe only PAL optimized versions have them in the CD's header.
Some have different version numbers instead and are harder to pick.