Im sorry but that is incorrect. Both A1 and H2D can do regular 0.20mm full speed benchy in about 42 min, same speed. The 17 min benchy on the A1 is probably the pre-sliced one, totally different settings, you have to compare apples to apples 
.
The H2D might be marginally slower but its a tiny difference that can pretty much be ignored in everyday printing. This thread should be put to bed.
Indeed, and like many others have stated: quality over speed. I’d rather wait a few more minutes (or hour(s) in case of large/complex prints) and have a high quality print.
I did a side by side test of a semi-complex project between the H2D - AMS 2 and the P1S - AMS 1 and something really weird happened.
Using TPU for AMS and PLA Basic.
Identical on both machines and all settings line by line, etc. identical and the H2D was way slower for some completely unknown reason.
The P1S generated the project faster and better quality than the H2D.
I reviewed every setting and every aspect of the two in Bambu Studio and for the life of me I cannot understand why the H2D is slower and lower quality.
Especially since with the P1S, I used the AMS 1 for both TPU and PLA for support. Which meant it would have to reel back and forth each layer in the P1S.
But the H2D as two separate hotends. I put the PLA for support with the outside left hotend and the TPU with the AMS 2 in the right hotend.
That way no break back and forth like the P1S.
Yet the H2D was not equal but slower than the P1S.
How is that possible?
@Narnar Just an idea, but did your prints complete at exactly the time predicted by the slicer? If not, then whittling down to a bare bones simplest print might point toward a source of unexpected deviations, thereby helping you figure out what happened.
Slicer gives a completion time for every layer, so it’s easy to track/ monitor progress against plan.
Speaking of which, it would be nice if the camera didn’t do only timelapse but instead recorded and timestamped every frame, as it would help with this kind of comparison. Seems like that could easily be added in firmware.
Post the 3MFs for both machines and i will take a look at it.
Roughly the same time the slicer promised for each.
Here’s deeper inside the numbers linked.
trying to upload screenshots as jpegs and even as a dropbox link but it isn’t letting me 
I’ll try uploading the files after i take my dog out to do her business 
Well then even better, as you can focus just on the slicer results and what affects them without having to even print it
It says new users cannot upload attachments.
Wonder when i stop being a new user
Did you read the rest of the thread? About why OP had his problem and the solution, and what app to use to upload files? 
Try uploading as a .3mf file. If still getting denied, take the discobot tutorial, read some more threads, do some comments, and soon you’ll get access.
yes with limewire, but this chat system wont let me upload links of any kind since i’m a new users.
But i’ll try limewire.
though i’m shocked they still exist.
Just DM it to me or email me…
perfect, emailing you now!!!
If you look at the speed visualization the H2D is much slower around 100mm/s vs 200mm/s on the P1s. Im just trying to figure out whats going on, probably some kind of bug or some settings that should not be turned on.
just emailed you some side by side comparisons you can upload here since the system wont let me yet 
The plate of objects that takes 8 hours to print at 0.08mm layers on the X1C is now, with the tweaked speed profile, saying that it will take 4.5 hours to print on the H2D (and without all of the waste from the colour swaps). Hopefully I’ll be able to actually print it tonight, and see if the quality is still fine at the higher speed.
So when i switch the layer heigh to 0.16mm the speed it as it should be, fast. But on other profiles its dips down to less than 100mm/s. Its some kind of bug with bambu studio, not much I can do to fix it sorry. Not sure what going on with the quality, but they are probably related to each other. Might want to submit it to bambu support so they fix it.
yup i think it’s a bug based on all you’ve stated Maximit.
So I’ve submitted a ticket on this and we shall see what they respond with at Bambu Labs.
Thank you everyone for this thread. I don’t feel alone at this perplexity.
