Adjusted steps, checked compensation is on and the pauses are still happening. Its not so much a jerk as a complete stop, wait for a bit and then continue. Here is an m122 during a stop
m122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.1.1 running on Duet WiFi 1.02 or later
Board ID: 08DGM-956GU-DJMSN-6JTD6-3SJ6L-9BNHF
Used output buffers: 1 of 24 (21 max)
=== RTOS ===
Static ram: 27980
Dynamic ram: 93892 of which 20 recycled
Exception stack ram used: 504
Never used ram: 8676
Tasks: NETWORK(ready,368) HEAT(blocked,1224) MAIN(running,1840) IDLE(ready,80)
Owned mutexes:
=== Platform ===
Last reset 00:20:15 ago, cause: software
Last software reset at 2020-09-20 13:29, reason: User, spinning module GCodes, available RAM 8692 bytes (slot 2)
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task MAIN
Error status: 0
MCU temperature: min 36.0, current 36.1, max 36.4
Supply voltage: min 13.2, current 13.5, max 13.7, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: standstill, SG min/max not available
Driver 1: standstill, SG min/max not available
Driver 2: standstill, SG min/max not available
Driver 3: ok, SG min/max not available
Driver 4: standstill, SG min/max not available
Date/time: 2020-09-20 13:49:29
Cache data hit count 2128334024
Slowest loop: 5.76ms; fastest: 0.12ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 9
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest read time 1.0ms, write time 0.0ms, max retries 0
=== Move ===
Hiccups: 0(0), FreeDm: 168, MinFreeDm: 165, MaxWait: 0ms
Bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves: 489, completed moves: 484, StepErrors: 0, LaErrors: 0, Underruns: 0, 0 CDDA state: 3
=== AuxDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0 CDDA state: -1
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
Heater 0 is on, I-accum = 0.4
Heater 1 is on, I-accum = 0.5
=== GCodes ===
Segments left: 1
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is doing "G0 X161.15 Y153.617" in state(s) 0
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 199.89ms; fastest: 0.09ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 1 of 8
- WiFi -
Network state is active
WiFi module is connected to access point
Failed messages: pending 0, notready 0, noresp 4
WiFi firmware version 1.23
WiFi MAC address 5c:cf:7f:76:6d:15
WiFi Vcc 3.38, reset reason Unknown
WiFi flash size 4194304, free heap 24584
WiFi IP address 172.16.1.144
WiFi signal strength -64dBm, reconnections 0, sleep mode modem
Socket states: 0 0 0 0 0 0 0 0