Hello adbo and welcome in our community.
I wish to share with you some tweakin’ to obtain a better print of your model.First of all here you are the results of the print with a PETG Burnt Titanium (no branded) notoriously hard to print (filament quality … 
)
As you can see, despite the cr*p and stringing of this filament, the print was a succes and the dimensions are respected…
Let’s see how did I tweak Bambulab Studio to obtain it:
Here in these screenshot you can see the orange parameters I changed for the Quality and Strength section:
Weird yeah but… I did change this parameter in the filament I used (I do it often and i obtain good results by doing that): In the filament parameters, “cooling” tab, set the Layer time to 1
Now if you check the Flow in the “Color Scheme” you can see how the flow is almost every where regular (except obviously where there are bridges and overhangs)
And lastly…(but not less important) I activated the adaptive layer thickness:
You can smooth the layer difference by placing the smooth Radius slider on 1 and clicking 1 or 2 times (not too much anyway) to obtain something like that:
Try printing again all your pieces by applying these tweakings and let us know if that was somewhat helpful.
When printing remember to check the “calibration” case… better
I will always be available also in private if you’d need.
Enjoy!!