I´m using passmark apptimer and I just got this:
C:\Program Files (x86)\GoldenDict\goldendict.exe - 2 executions
0.9819
0.4079
The startup tooltip shows 442 dictionaries! (including the huge wikipedia aardicts files)
The one thing I know is that I have left unchecked all my dictionaries paths in the Sources dialog...
When I leave all the paths checked startup goes up to 19 sec. but only cca 100 more dictionaries will show up...

edit: ah well, I forgot that checkmark is meant to search the folders recursively. I think I need to tidy up the folder structure...