Uhm… the portable works nicely and the installed one has those delays!? Wow, that's interesting. The only difference between those two is how the settings are stored: in an .ini for the portable one and in the registry for the installed version (same code in both cases, which code path is used is determined by the presence or absence of the file data\portable-app).
Do you still have the registry settings from the installed version? They're stored as HKEY_CURRENT_USER\Software\bunkus.org. If so, can you please export that sub-tree and send it to me to
moritz@bunkus.org? Thanks.