subdivisions is for the calculation of the curves and their precision, where 0 means perfect curves and 999 worst. known values outside the pb range are buggy and allow you ingame advantage.

lodbias is for distance rendering of those curves to save resources.

r_subdivisions 80
finito, game wont make them lower.

then find a r_lodbias value that allows that stuff :F can be its even hardcoded.

Nyet)

r_subdivisions 1
r_lodbias 2

Zoomed in from the quad/ra spot.

Don't forget to vid_restart or reload the map or you won't see the changes.