there is no point in me sending you files.. copyright.. just put any 3d object (preferably something that needs a lot of retraction) to print and test with enabling retraction with different retraction lengths.. the retraction lengths get ADDED to the calculated length of total filament used instead...
When using retraction the filament length calculation adds that retraction length per line each time, resulting in wildly overestimated lengths with long retraction settings.. can be tested easily by disabling and enabling retraction or changing the retraction length.