Can't seem to control first layer speed, current default feedrate not updated

[tyeth]

the gcode I have is setting a feed rate and the toolhead moves about that fast, then starts moving and extruding really really slowly from the Brim onwards (totally ignoring the previously set feed rate). I've maybe made the problem worse with G3 arcs. Running via octoprint over usb-serial.

It's setup for 240c PLA-LightWeight (eSun) at 40% flow. (Should have been 245c but messed up setting)

S2A tray_beveled-openscad eSUN ePLA-LW-no-slow- lw 0.4mm lh 0.24mm if 0% ext1 240.0C bed 70.0C.zip