Question about Purefil Filament

Why do people want information about the colour? :-D Unfortunately I bought 2 spools. As a newcomer to the "3D printer world", I first worked with a demo filament and was very successful and enthusiastic. Even proud of ambitious print models Then I tried my Purefil... because I thought "now it will be even better".... with the perfect print with cheap filaments, I thought now Swiss Precision comes along. What happened: After insertion problems, the print does not work without glue on the print bed, there is still warping (as a consequence of not gluing). After hours and a few temperature turrets (to optimise the parameters) and a few 25 hour long printing processes that went to shit... I'll just throw it in the bin... With the demofilament and others I have beautiful print again and can again.... Too bad, too bad... I thought "Swiss Quality" really meant something. Doesn't seem to be the case. I measured with calipers and measured diameters from 1.74 to 1.90 mm. If you think (even as an inexperienced user) that you control in cm of filament/second, it is clear that the amount of material will vary, and possibly have consequences on the print quality, no? So for me it's a "no-go" for the time being... But I will test it on CR ender 3 (and report back).