Stuttering movement with corexy running bcnc autobed level code

[xnaron]

Describe the bug
I am using a drill file from flatcam. When I run it on the nucleo 401 (using the ant pcb firmware) it runs fine. However if I do an auto bed level and then run it I will get stutter on fast travel moves. I will attach the offending snippit of gcode as well as my configured parameters

The stuttering occurs with or without belts connected to the steppers. I have tried lowering the max rate for Y and X and it does not stop the stuttering. To me it seems like the timing for the stepping pulses is somehow going out of sync.

https://www.youtube.com/watch?v=tLgvMT3h3JA

Additional context
Add any other context about the problem here (e.g. tool used, configuration used, microcontroller, etc.).
$0=10 (step pulse, usec)
$1=255 (step idle delay, msec)
$2=0 (step port invert mask:00000000)
$3=0 (dir port invert mask:00000000)
$4=0 (step enable invert, bool)
$5=1 (limit pins invert, bool)
$6=0 (probe pin invert, bool)
$10=3 (status report mask:00000011)
$11=0.010 (junction deviation, mm)
$12=0.002 (arc tolerance, mm)
$13=0 (report inches, bool)
$20=0 (soft limits, bool)
$21=1 (hard limits, bool)
$22=1 (homing cycle, bool)
$23=0 (homing dir invert mask:00000000)
$24=100.000 (homing feed, mm/min)
$25=1000.000 (homing seek, mm/min)
$26=250 (homing debounce, msec)
$27=1.000 (homing pull-off, mm)
$28=20000 (Spindle pwm period, us)
$29=1860 (Spindle pwm Max time-on, us)
$30=700 (Spindle pwm min time-on, us)
$31=1 (Spindle pwm Enabled at startup)
$100=170.000 (x, step/mm)
$101=170.000 (y, step/mm)
$102=100.000 (z, step/mm)
$110=8000.000 (x max rate, mm/min)
$111=8000.000 (y max rate, mm/min)
$112=500.000 (z max rate, mm/min)
$120=500.000 (x accel, mm/sec^2)
$121=500.000 (y accel, mm/sec^2)
$122=100.000 (z accel, mm/sec^2)
$130=160.000 (x max travel, mm)
$131=270.000 (y max travel, mm)
$132=200.000 (z max travel, mm)

(Block-name: Header)
(Block-expand: 0)
(Block-enable: 1)
(G-CODE GENERATED BY FLATCAM v8.913 - www.flatcam.org - Version Date: 2019/04/13)

(Name: drills.xln_cnc)
(Type: G-code from Excellon)
(Units: IN)

(Created on Saturday, 20 April 2019 at 15:56)

(Feedrate: 3.0 in/min)
(Feedrate rapids 3.0 in/min)

(Z_Cut: -0.08 in)
(Z_Move: 0.1 in)
(Z Toolchange: 1.0 in)
(X,Y Toolchange: 0.0000, 0.0000 in)
(Z Start: None in)
(Z End: 2.0 in)
(Steps per circle: 64)
(Postprocessor Excellon: default)

(X range: 0.0929 ... 3.3071 in)
(Y range: 0.0949 ... 3.1485 in)

(Spindle Speed: None RPM)

G20
G90
G94

G01 F3.00
(Block-name: block [autolevel])
(Block-expand: 0)
(Block-enable: 1)
G0X0Y0Z0.0989

M03
G0X0.0589Y0.15Z0.0996
G0X0.15Y0.3818Z0.1007
G0X0.2537Y0.6458Z0.1021
G0X0.4485Y1.1417Z0.1038
G0X0.6433Y1.6375Z0.103
G0X0.6667Y1.697Z0.1029
G0X0.8381Y2.1333Z0.1021
G0X1.0329Y2.6292Z0.1028
G0X1.1Y2.8Z0.1031
G1X1.1Y2.8Z-0.0769
G1X1.1Y2.8Z0.0031
G0X1.1Y2.8Z0.1031

[adichell]

Hi,
thanks for the info, I will try to reproduce it as soon as I can ( i have seen this issue opened just now, sorry).
In the meanwhile you may try the new version that solves some bugs and improves some little things.

I also wanted to ask you: What are your drivers/stepper settings? I mean in terms of Vref/current limitation and microsteppings.

Regards.