Anyone has an idea how to work on Poser 5.0 & having Quicktime 7.0 / 7.4 installed ???

When Quicktime 7 is installed, browsing my folders in Poser 5.0 is a real pain,
it takes more than 1 minute to have access to files in folders ... without Quicktime it takes 2 seconds !

Maybe someone has a tip to fix that ...

Strangely, Quicktime 7 has no impact on Poser 7.0 ... but I use mainly Poser 5.0.