@mrehorstdmd Thank you for your answer.
I made another test at the same speed with a triple-layer perimeter circular pattern.
My setup is a Revo Six hot end with a Titan extruder driven by a slightly underpowered Nema motor than the one suggested by E3D for Titan.
The pulleys and belts are okay, and the hot end attachment seems rock solid. My concern lies with the mini V wheels or the wheel bearings, which could deteriorate over time. I am searching for a reliable European seller to buy good-quality V wheels.
This is the result of the print at 130 mm/s. During the print, I could hear a rhythmic noise pattern coming from the Y-axis. This is the reason I am considering a wheel problem.
Immagine WhatsApp 2024-01-25 ore 08.40.18_8390771b.jpg