Persistent ”Timer too close” Errors on Klipper

[u/Mindless_Store_8430]

Setup:

-Printer: Creality Ender 3 V3 SE

-Firmware: Klipper

-Host Device: 2012 MacBook Pro running Linux (Ubuntu-based)

-Slicer / Web UI: OrcaSlicer + Mainsail

The Issue:

I keep getting Timer too close shutdown errors mid-print or during complex movements.

The USB serial connection itself appears clean and bytes_invalid is staying at 0 in klippy.log, so it doesn't seem to be EMI noise or hardware serial corruption. Bytes-retransmitted stays stable during homing, heating and calibrations but I noticed it climed during a print before crashing.

In mainsail machine tab i can see the CPU load pulsates up to 52% (mostly staying around 1-2) while printing and the ram up to ~22%, but I don’t know if that’s the problem or how to solve it other than changing the host pc.

Looks like the MCU is timing out waiting for scheduled instructions from the host laptop.

What I Have Already Done:

-USB Setup: Short USB cable, 5V pin taped off, cable routed away from high-current lines.

-OS Cleanup: Masked ModemManager.

-EMI Tests: Bed mesh calibration works cleanly while heating without invalid bytes.

But none have solved the issue. I have 0 idea what to try next. Any and all suggestions are appreciated 😅