Can't you just adjust the initial speed,
as this is for the first number of layers set by initial height
("initial layer height" divided by "layer height" give the number of layers at this speed)?
Initial layer is ONLY the first layer printed.
Just a thought, that's was wrong..
Edited by Torgeir
Correcting an error!
I think you will have to do some hand coding. Create the gcode file with the print speed at 60.
Open the file in your text editor. Layer numbering in Cura starts with 1 but in Gcode it starts at 0.
Scroll down to Layer:0 and right under that line add M220 S333
Use the search function to find Layer:4 and right under that line add M220 S100.
The first M220 will change the feed rate to 333% of 60 (199.8mm/s) for layers 0, 1, 2, 3. The second M220 will change it back to 100% for layer 4 (Cura layer 5) to the end of the file. If your max feed settings in config.h are lower they will over-ride and limit the speed.
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