Seems like you're labouring under false pretenses then.

A. What is the value of your equity?

B. What is the likelihood of it vesting in the next 5 years?

C. How much "total benefit" (salary increase, stress decrease, etc) would you gain from moving to a different company over the next 5 years?

If A*B < C, move.

Heck, even 5 years might be too long of a consideration here.