Slow functions

[Davelicious]

Since a few versions of TCUP (i think since 5.5) some functions are very slow the first time I use it.
For example when I want to view a picture or textfile with "F3" (fastview with the internal viewer (lister)) it takes between 10 to 30 seconds to open it the first time, once opened it opens all other files immediately until I dont use TCUP for a while (between 30 to 60min) the slowness reoccurs for the first file want to open.

The same slowness behavior also occurs when I try to create a new folder "F7" for the first time (about 10seconds) and when I try to edit a textfile "F4" (with notepad++).

I notice this behavious on all computers where I installed TCUP (6 different computers all running windows 7, 8 or 8.1)

(I can't imagine that no one else facing the same issues)
Any ideas what the cause could be? and how to solve it?

rgrds,
Dave

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