Without knowing some more information, it's too simplistic to say it's your snowboard setup
Yes, it could be your snowboard setup being that it's too wide and to get any leverage you're squeezing your legs and pronating too much putting too much stress on your medial tibia. After a few hours this could cause minor stress fractures
It could also be done by impact (usually more likely) if you're in the park at all.
I would also say at the age of 26, this shouldnt happen so you have something biomechanical or nutritionally deficient or something.
If you live where there isnt a lot of sun i would say vitamin D deficient so your bone quality isnt high enough to take the stress from boarding.
If you're getting bone bruises/fractures there is a lot more going on here than.
Has the meniscus tear been ruled out? Clicking and popping usually means theres some sort of tear, it might have scarred over by now though.