I printed this using the filament setting in Bambulab for polylite ASA, extra draft 0.28mm line height, 240C hotend temp, 260C 1st 3 layer temp, 100C bed temp. Layer adhesion didn’t work…I also printed the same using PLA with Bambulab filament settings as well, same results. This is approx 240mm x 240mm x20mm high. I am guessing you can’t print 0.28mm line height using the .4mm nozzle, is that correct? Initial height was 0.2mm height for 1st 3 layers.
Are you sure the model file does not have any tiny gaps causing the issue?
Model file ok. My thought is that the wall thicknes is not wide enuff.
I Print a very Lot with ASA try the follow.
1st layer 265°C Z Offset -0.1 in a RAW pei surface (Press the Material into the build Plate!) with Speed 16mm/s Zero Fan.
This will the 1st layer sticky as hell.
Every other layer 235 -245 °C 100° Bed is okay
Printet at least 50kg ASA so far 
Unfortunatelyni have No Pics that iam allowednto Share with you 
I am trying your settings. Let you know. Mark
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I cabt speak for the Bamboo Plate, but with pei i also have good experience With dishwashing liquid instead of Isopropanol Just Clean With mich water. It looses fat better than ISO, cause ISO can also spread It around
Greetings
When you say 16mm/s you mean volumetric flowrate 16mm3/s right?
No i mean Speed 16mm/s Initial layer Speed very slow
I printet ASA in 300x300mm 12cm high without warping in a Raise 3D pro 2 without chamber Heat (but 8mm/s Initial layer Speed ) ITS very slow butbit increase the adhesion in pei enormus espacially with a high Temperature