Sorry, I overlooked the edition issue.

What I tried to say is that while you could investigate what is going on with your hardware, you could also consider these INSERT statements. They insert a single row, and if there is only a single row to insert, there is not much to do about it. But since they were problematic, my suspicion is that there are more than one row to insert, and the INSERT statements are performed as part of a loop. And in this case there is certainly room for improvements.