Sure thing. First check the power supply rail – even a tiny ripple can sneak in through the driver. Try a small series resistor on the LED line, maybe 10‑20 ohms, it’ll dampen high‑frequency spikes without adding a lot of parts. If that’s still noisy, a fast‑switching MOSFET gate driver can smooth the PWM edges. Finally, make sure the PCB traces are short and wide; a little re‑routing can cut a lot of inductive pickup. Give those a shot and let me know what the results look like.