Slow Printing After Power Cycle

I have my BLTouch installed and functioning with the latest 4.0.3 FW. It was working great until We had a power failure in the neighborhood. Now The print speed is 1/10 of what it should be. The homing and auto-leveling speeds are fine. I have checked the steps, feedrate, accelerations, and jerk in the settings and they seem ok. I was using 20mm/sec in Cura with good results but now the speed is really slow. I increased the speeds to 40 in Cura but it had no effect.
Here is a video of the last 3 leveling moves a purge line then the printng.

IMG_1866 IMG_1865
I am familiar with the Arduino IDE. Do you have any suggestions as to which variables I should check?

Have you tried to reset the settings?

Thanks Sebastion for the prompt reply. I will try the reset and let you know how it goes.

I tried resetting to Factory Defaults but there was no change in the printing speed.
Anything else I can try?

It looks like your mainboard was damaged because of the power outage. Or maybe the PSU.

I was able to recover the printing speed. I used this Arduino code to clear the SRAM then built V4.0.3 with Arduino V1.8.10 and up loaded it to the printer.

Here is a video of my printer working:

Great and good to know

For info, this is not a “RAM” cleaner. This script erases the EEPROM memory.

I have made some minor modifications of the code. Here it is:

 * EEPROM Clear
 * Sets all of the bytes of the EEPROM to 0.
 * Please see eeprom_iteration for a more in depth
 * look at how to traverse the EEPROM.
 * This example code is in the public domain.

#include <EEPROM.h>

void setup() {
    Iterate through each byte of the EEPROM storage.

    Larger AVR processors have larger EEPROM sizes, E.g:
    - Arduno Duemilanove: 512b EEPROM storage.
    - Arduino Uno:        1kb EEPROM storage.
    - Arduino Mega:       4kb EEPROM storage.

    Rather than hard-coding the length, you should use the pre-provided length function.
    This will make your code portable to all AVR processors.

  for (int i = 0 ; i < EEPROM.length() ; i++) {
    EEPROM.write(i, 0);


void loop() {
  /** Empty loop. **/