Can you print at low speeds with e3D Volcano hot end?
Speaking from first hand experience running a Volcano hotend, mostly using a 0.6&nbsp;mm nozzle, but I have used 0.4&nbsp;mm as well. I can't really complain about any lower printing speed limit (low speeds are usually a solution to high speeds problems for me).

Just for completeness: I am using a DaVinci 1.1 Plus with custom firmware (modified Marlin) and an E3D Volcano hotend. No problems with the nozzle, clean prints! Note: I am using the Titan Aero as extruder but not using the included pancake motor! Went with the original motor of the DaVinci.

And as always: the parameters are key! Given a bit of tuning you can get amazing results! For PLA and ABS I can work without stringing. Although ABS seems to be prone to pitting (slight underextrusion at start of path). TPU and other flex are sometimes a bit of a challenge, but that's mainly due to my own lack of experience there.

The one important caveat here would be to also reduce the nozzle temperature. A possible theory here might be that the filament has more time and surface to heat up.

(Sometimes I go as much as 15&nbsp;°C lower as compared to normal/high speeds! Usually lower speeds means small pieces for me and in term means a limit to the layer cooling time.)