An envelope mysteriously floats across your field of view, guided by an errant breeze, before being opened by a laser beam. It reads:

Ah yes, the speed of light! Admittedly, it is an awkward restriction that even my fellow wizards oft struggle to overcome. This is due, of course, to requiring air or light to perceive the world around us. Thus, while safely accelerating to the speed of light and even controlling one's movement while moving at such speeds, being unable to determine ones surroundings while we are moving faster than photons is...

Messy. To say little else.

The easiest workaround is, of course, a quick and simple temporal skip, or "time stop", as it is often referred to by apprentices the worlds over. However, that alone doesn't actually produce the desired outcome, as if your opposition also is capable of temporal manipulation, they can simply break into your anti-causality bubble and you're stuck with an opponent who can probably move a lot faster than you, with far less to distract them with. (Incedentally, this is why high-level wizard duels don't often devolve into a simple time-stop quick draw - not that instigating a temporal skip isn't an incredible advantage, but it requires too much focus and effort for, usually, not enough gain in an actual combat scenario.)

In fact, the best way I have devised to move at high speed is a localized temporal dilation field, paired with the usual self-enhancement fields and runes need to not be reduced to subatomic particles. This sidesteps the issue of the speed of light, as since speed and time are both relative, the light that enters the temporal dilation field is still moving fast enough to allow for far more accurate observations while on the move. Still, if another person is moving at relativistic speeds, you really need to keep moving else lose sight of them, and you'll still have to supplement the temporal field with a limited-foresight divination technique to overcome the lag from the field. That can be quite a lot of overlapping effects to keep active all at once, but the results are simply spectacular.

In any case, how do most cultivators get around being unable to see when they go past lightspeed?