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Octopus pro Biqu H2 500c motor is heating up

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I have been struggling for a week with proper printing in the chamber. Klipper tmc2209 driver installed


[tmc2209 extruder]
uart_pin: PF2
run_current: 0.450
hold_current: 0.300
stealthchop_threshold: 999999

The extruder gets so hot that it stops feeding the filament - it slips.
retraction 0,4mm speed 4mm/s

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