When you do some regular maintenance (or if?!) tighten those hotend screws.
My print quality got worse over time and then suddenly down the drain completely.
First picture is an example how the quality changed over night. Second picture is another attempt followed by third picture of the screws I am talking about and last picture is after tightening.
Oh another piece of evidence that something was loose ? Check the very last picture lol. You can see something clearly moved there.
This A1 has 700 hours print time and never had to do that before. So yea - next time, maybe just in case - thighten things up …
