Help Issue with advanced Visitor Messaging

Not sure if this is the right section, but here's my problem:

When I'm typing up a visitor message to someone who I have a large amount VMs with (For example, DarkTraitor/Nagisa Adelheid and I have over 9000 VMs in all) and I click the "Go Advanced" option, it loads every single VM ever sent between the two of us, meaning it is literally loading over 9000 VMs in the case of me and DT. This causes my browser to freeze for almost a minute or longer before I'm able to make the VM with the advanced post layout.

This is a pretty big inconvenience for someone like me who prefers to use the advanced post layout for making VMs. If it were to work like it did in threads where it only loaded the previous 10 or so messages, then this wouldn't be so much of a problem.