[BUG] Blobs and stuttering Anet et4, MCU: STM32F407VGT6 ARM CORTEX M4

[Daniel-br0]

Bug Description

Configuration Files

Required: Include a ZIP file containing Configuration.h and Configuration_adv.h.

If you've made any other modifications describe them in detail here.

Steps to Reproduce

1. Compiling Marling 2.0 bugfix for Anet et4+ with inductive sensor using platformio, https://github.com/davidtgbe/Marlin
2. Flashing bootloader to 0800000 and than .srec to 08010000
3. Printing objects like julians vase with complex mesh https://www.thingiverse.com/thing:126567.

Expected behavior:

Expect nice and smooth surface.

Instead I have blobs on surface.It is not a bad filament with humidity or cura config with min mesh set to 0,5 (cnc kitchen), tried with prusa slicer, simplify and cura, the same. Printing from a good sd card, ajusted buffers to 32 instead of 16, almost no changes. My guess -it has something to do with CPU, but I don't know where to look for exactly.

Additional Information

• Provide pictures or links to videos that clearly demonstrate the issue.
• See Contributing to Marlin for additional guidelines.

[shitcreek]

You are using a separate branch of Marlin. Try the official bugfix and see if you get the same results.

[Daniel-br0]

Thanks!

[thisiskeithb]

The ET4 motherboard is not supported here yet, but there’s a pending PR to add support: #20280

[github-actions]

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