I just wanted to kick off a PrusaSlicer profile and setup discussion thread since there seem to be at least a couple of people trying to work with this. I don't have a tested profile ready yet but am definitely interested in what speeds others are using as that is the one part I just transferred more or less wholesale from the E3D S3D factory files. The main change I have made on the printer firmware side is to change the tool definitions so the individual PCF are associated with the tools as described in this thread. Then I was able to remove tool number parameters from the M106 commands in the various toolchange macros. Now tfreeX.g just calls M106 S0 to stop the PCF when the tool is dropped and tpostX.g calls M106 R2 to restore the value set from M106 calls generated by PrusaSlicer. This allows fan settings to follow the tool and PrusaSlicer to change the fan speed for each tool if needed. For temperatures I am setting them normally, per tool in PrusaSlicer and also setting the Temperature Delta in the ooze prevention option in the print settings (but then leaving ooze prevention turned off, I just want somewhere to put in a temperature delta). I've then made a small C++ post processing script which takes the generated gcode and replaces the M104 commands with G10 commands for each tool where the active temperature is set based on the M104 command and the standby is set by adding the (usually negative) delta, which is able to get retrieved from the SLIC3R_STANDBY_TEMPERATURE_DELTA environment variable during post processing. The end result is a G-code file which uses G10 for all hotend temperature control and sets standby temperatures to something reasonable. It obviously isn't clever about when to heat things up but neither would S3D so I don't really see a big issue there. I've generated some test G-code and manually reviewed it and done some G-code console tests but haven't printed yet as I am still sorting out my priming macros. Fingers crossed I can run a print soon. In the meantime very interested in what values others are using for speed and retraction in PrusaSlicer since it offers more categories than S3D. The E3D factory seemed pretty conservative at 40mm/s given the capability of the toolchanger. In any case, just wanted to kick off a place for PrusaSlicer discussion.