Hi Josh,

Thanks for your support.

Finally we could solve this issue by creating an index on the table "audit.xxxxx_listauditdomain", column "listitementityid".
In our system, this table currently contains more than 4.5 millions of records. By creating the index, we could speed very much showing the item history of a record in a list. Before the index creation, showing the item history would take about 2 minutes, after that it takes only about 2 seconds.

I just wanted to share the experience in case it can be useful to somebody else.

Regards,
Eva