V carving requires a couple of things:
- completely level wasteboard, stock surface, and gantry, or a mechanism to adjust for an uneven stock surface: https://wiki.shapeoko.com/index.php/Calibration_and_Squaring_the_Machine#Tramming and https://wiki.shapeoko.com/index.php/CAM#Leveling
- an appropriate setting of V endmill angle to text/feature size: https://wiki.shapeoko.com/index.php/Endmills#V-bits
- a machine in otherwise good mechanical shape: https://wiki.shapeoko.com/index.php/FAQ#Mechanical
- appropriate feeds and speeds: https://docs.carbide3d.com/support/#tooling-support and https://www.youtube.com/watch?v=S9bceJxpqG0 for concepts on this and https://www.precisebits.com/tutorials/calibrating_feeds_n_speeds.htm for a testing technique
- ensuring feature size doesn’t overwhelm the ability of a tool to cut to a given width: V carve + inside pocket?
Further, it may be helpful to use a CAM tool which preserves G2/G3 arcs.