5.2 volts should be well within spec of the board, but david should know more on that than I do.

@paulhew The only explanation is that im a daft prick. I think i fugged up my E speeds ands acceleration at some point. Doesn't explain why I couldn't just override it.
https://youtu.be/tr7fGtmQUk8

It was either volumetric flow in prusa slicer or max speed in the config

It was either volumetric flow in prusa slicer or max speed in the config

@paulhew The only explanation is that im a daft prick. I think i fugged up my E speeds ands acceleration at some point. Doesn't explain why I couldn't just override it.
https://youtu.be/tr7fGtmQUk8

@paulhew 10mm/3 seems like a good middle ground for the volcano

@paulhew It's at 0 which is default so I assume that's off?

@paulhew I'll give those a go, Thanks for the help. I'll be testing them in the next hour once this part is printed.

@paulhew Its 38 x 45mm. I just don' t get why it wont increase in speed at all from DWC. I've always been able to crank it up to suit my needs. Now I'm stuck with a 6 hour print when it should have been done in 20min

fixture.stl

@engikeneer Its set to reprap/sprinter

@jens55 By printing things usually dialing up with macros. But nothing is increasing the speed at all, it'll go slower.
right now i dont care for setting the proper speeds. I just want to go faster than 25mm/s 2000% speed should have done something.

Should the print speed in dwc override what the slicer?

@oliof Im using prusa slicer!

this is what i have in the speed settings.

I've cranked my max accel and speeds up and nothing its just staying at 24mm/s

Important Info.
Duet wifi
Firmware 2.05
DWC 2 something " I dont have remote access to check right now"

https://youtu.be/QPU4l37tXkc

; Configuration file for Duet WiFi (firmware version 2.03)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.2 on Sun Sep 19 2021 14:10:08 GMT-0700 (Pacific Daylight Time)

; General preferences
G90                                     ; send absolute coordinates...
M83                                     ; ...but relative extruder moves
M550 P"Castle"                          ; set printer name
M669 K1                                 ; select CoreXY mode

; Network
M550 PCaslte                          ; Set machine name
M552 S1                               ; Enable network
;*** Access point is configured manually via M587
M586 P0 S1                            ; Enable HTTP
M586 P1 S1                            ; Enable FTP
M586 P2 S0                            ; Disable Telnet
M587 S"RI-Wireless" P"Ridgeview8648"                              ; disable Telnet

; Drives
M569 P0 S1                              ; physical drive 0 goes forwards
M569 P1 S1                              ; physical drive 1 goes forwards
M569 P2 S1                              ; physical drive 2 goes forwards
M569 P3 S1                              ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3                        ; set drive mapping
M350 X32 Y32 I0                         ; configure microstepping without interpolation
M350 Z16 E16 I1                         ; configure microstepping with interpolation
M92 X325.00 Y325.00 Z1080.00 E700.00    ; set steps per mm
M566 X1900.00 Y1900.00 Z90.00 E120.00     ; set maximum instantaneous speed changes (mm/min)
M203 X10000.00 Y10000.00 Z280.00 E1200.00 ; set maximum speeds (mm/min)
M201 X1900.00 Y1900.00 Z50.00 E250.00     ; set accelerations (mm/s^2)
M906 X1100 Y1100 Z1500 E350 I30         ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                        ; set axis minima
M208 X343 Y325 Z750 S0                  ; set axis maxima

; Endstops
M574 Z1 S1                              ; set active high endstops
M574 X1 Y1 S3                           ; set endstops controlled by motor stall detection

; Z-Probe
M558 P5 H2 F295 T6000                   ; set Z probe type to switch and the dive height + speeds
G31 P500 X-24 Y0 Z3.361                   ; set Z probe trigger value, offset and trigger height
M557 X5:350 Y15:335 S38                ; define mesh grid

; Heaters
M305 P0 T100000 B4138 R4700             ; set thermistor + ADC parameters for BED heater 0
M143 H0 S120                            ; set temperature limit for heater 0 to 120C
M305 P1 X200                            ; configure PT100 for heater 1
M143 H1 S280       ; Set thermistor + ADC parameters for heater bed?
                      
; Fans
M106 P0 S0 I0 F500 H-1                  ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T45               ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Tools
M563 P0 S"Volcano" D0 H1 F0           ; define tool 0
;G10 P0 X0 Y0 Z0                         ; set tool 0 axis offsets
;G10 P0 R0 S0                            ; set initial tool 0 active and standby temperatures to 0C

; Custom settings are not defined

; Miscellaneous
T0                                      ; select first tool