Creality K1 printing quality issues with PA/Nylon newbie

[AlMg]

Hello,I'm new to the world of 3D printing and I'm currently using a Creality K1 printer. My goal is to print with Nylon. I have previously conducted a few test prints using PLA, which turned out decently. However, I've encountered difficulties in finding the optimal settings for printing with Nylon, despite my efforts over the past two days.To begin, I attempted to print a basic all-in-one 3D printer test model. The attached photos display the outcome. I would greatly appreciate advice from some of you pros regarding the various issues I need to address, as I'm aware there are multiple problems.For this particular print, here are the specifications I utilized:- Nozzle temperature: 275°C (the filament manufacturer suggests 245-270°C, but it doesn't print properly below 260°C and after a temperature testprint i found 275°C to be the best temperature for this filament)- Bed temperature: 75°C (Parts tend to detatch from the printbed at temperatures over 75°C)- Layer height: 0.2mm- Infill: 20%- Speed: 35mm/s for outer and inner walls, and 50mm/s for infill- No part cooling- Retraction distance: 3.5mm- Retraction speed: 35mm/s- I have a filament dryer running throughout the printing process.Initially, I suspected a nozzle clog and cleaned it, but unfortunately, that didn't resolve the issue. The overhangs are bad, so I experimented with adjusting the flow rate. However, increasing it by 5% made it worse, as did decreasing it by 5%.I'm hoping that some experienced individuals can provide assistance. If necessary, I can provide additional information.Thank you in advance.