I wonder how your URL looks like and whether it is apples to oranges comparison, because default settings have changed between those versions, most notably default storage engine was pagestore in older versions vs mvsore in recent ones. That alone can have big performance impact.
In any case, we still need your standalone test case -- You received this message because you are subscribed to the Google Groups "H2 Database" group. To unsubscribe from this group and stop receiving emails from it, send an email to h2-database+unsubscr...@googlegroups.com. To post to this group, send email to h2-database@googlegroups.com. Visit this group at https://groups.google.com/group/h2-database. For more options, visit https://groups.google.com/d/optout.