I am printing at 50 mm/s. I upped the buffer to 32 and cylinders still pause and glob during the print.
Cura on left and Prusa on right. Both going through octopi.
Edit: Included Gcode for bothCura Cyl.gcode (1.0 MB) Prusa Cyl.gcode (591.2 KB)
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Finally fixed my issue with a few things. #1 was a complete clean reinstall of octoprint
#2 was updating some firmware settings
Configuration.h
#define BAUDRATE 250000
Configuration_adv.h
#if ENABLED(SDSUPPORT)
#define BLOCK_BUFFER_SIZE 64 // SD,LCD,Buttons take more memory, block buffer needs to be smaller
#else
#define BLOCK_BUFFER_SIZE 64 // maximize block buffer
#endif
#define MAX_CMD_SIZE 96
#define BUFSIZE 32
#define DEFAULT_MINSEGMENTTIME 50000
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Did you get the "Low memory, may become unstable" warning setting the buffers at 64? I did but I might try it anyway.
I have another idea: maybe the Raspberry Pi suffers from voltage drops. Maybe try upgrading the RPi power supply.
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Have you guys checked what CPU "profile" your Pi is using? I've had issues in the past with stuff like this but in a completely different application where if I was under-utilising the pi it would reduce cpu power consumption and cock up.
Just an update. I'm currently running Octoprint on a Rpi4 which solves the problem exactly as running Octoprint on an Intel or AMD computer. Never found a solution to this when on slower Raspberries and this printer board. Quite confident it's a buffer under run issue.
Anyone else finding this post, one other way to possibly deal with this issue in the slicer (as implied by @foosel) is to adjust your resolution settings.
Explained here:
Below pic shows my issues with Octoprint (top), without (middle), and then after adjusting my resolution settings (still without OctoPrint, but presumably will massively improve)
