Had some complains about performance and noticed that:

otrs/index.pl?Action=AgentTicketAttachment;Subaction=HTMLView;ArticleID=108240;FileID=1

Took 99ms

otrs/index.pl?Action=AgentTicketAttachment;Subaction=HTMLView;ArticleID=108240;FileID=2

Took 30s

What would be the reason?

Thanks.