I switched from P1S to P2S because I wanted a “more modern” printer, with improvements and convenient refinements based on several years of observations of its predecessor.
Above all, it was supposed to be FASTER, more efficient, quieter, more accurate, more “interactive” – thinking for the user, forgiving mistakes. In some areas, this is indeed the case, while in others, it turns out that it is not as refined as advertised.
After just a few days of use, I was surprised to find that practically every model I wanted to print, after calculations in Bambu Studio, took longer to print on the P2S than on the P1S. Sometimes by a few minutes, sometimes by almost an hour, depending on the complexity of the model. So, a newer, better, more powerful and faster printer prints slower than its predecessor? Why?
But I would mainly like to draw attention to the printer’s features not directly related to printing. What I noticed…
In P1S
When you select the LOAD/UNLOAD option (when you want to load filament from outside the AMS system) The nozzle heating process begins IMMEDIATELY, WHILE the toolhead moves from above the purge bin to the end positions on the X and Y axes at the front of the printer - it does this ONCE for each of them, repeating a “short confirmation movement” once to confirm the end of a given axis. It returns to the purge bin and, after reaching the required temperature, moves to the front of the printer to cut the filament and returns to the purge bin again.
What I would like to point out is that the heating and positioning of the head occurs SIMULTANEOUSLY and happens at the same time.
In P2S, on the other hand
The entire process is much slower and, in addition, much noisier = even irritating. After selecting the LOAD/UNLOAD option, the first thing that happens is that the toolhead starts to home. Nothing else. The upside is that the home point has been moved closer to the toolhead parking point (purge bin) and is now located at the rear of the printer on the right. However, the toolhead still does this THREE TIMES for EACH axis, repeating a “short confirmation movement” at the end of each axis each time. In addition, DURING EACH of these cycles of moving to the end stops, a metal rod swings out to help the toolhead cut the filament. It does not participate in this operation, but deflects automatically due to the design of the printer. The “opening” of this rod generates a very loud, distinct click. Listening to this entire long cycle of reaching the end stops accompanied by loud clicks undermines the description of the printer as being quieter - and therefore more user-friendly. As if that were not enough, ONLY AFTER this entire “clicking dance” of the toolhead and its parking over the purge bin does the nozzle heating process begin.
I roll my eyes to the sky and ask: WHYYYYY??!!
What is stopping the nozzle heating process from starting immediately, so that it heats up during this crazy “dance”?
Why does the print head need to be calibrated so many times when its predecessor only needed to be calibrated once to produce correct prints?
Are these programming shortcomings, where this was neglected in order to focus on improving the main printing functions? And is this feasible, and will we perhaps see improvements to these functions someday? Or is this just the way it has to be, because this model cannot be improved upon?
–yeah, I’m old 
. Not sure if this helps, but thought I’d add my experience as this topic looks interesting. GL friends.