ADC128S102QML-SP: operating at clock frequency outside of the specified range?

Part Number:ADC128S102QML-SP

Team,

I have seen the below E2E answer already:
https://e2e.ti.com/support/data_converters/precision_data_converters/f/73/p/599103/2202850?tisearch=e2e-sitesearch&keymatch=ADC128S102%20slower%20clock#2202850
I understand that we expect the device to be operated in the condition we describe in the data manual.
But may be we have some more information to share:
-When operating outside of the specified condition (at clock rate between 300khz and 800khz) what would be the typical consequence?
-What effect could appear when operating at such clock frequency?

Thanks in advance,

Anthony