Is this the engraving speed i should expect after upgrading to smoothie?

Does the GRBL-LPC firmware use a different USB path? The same software feeding GRBL-LPC with the same mechanism, presumably through the same drivers, does not exhibit the issue. I’m curious as to why.

@LightBurn_Software That’s the right question. And if they use a different USB path, that’s the next why.

+Wolfmanjm I don’t deny the reason you found for the delay with your firmware, but you deny all the other facts (2x speed with grbl-LPC, even faster with 8bit grbl). You just don’t want to hear it!