Are there any disadvantages to ‘fast travel’

the-witcher-3

AFAIK it takes the same amount of time if I run by foot as if I fast travel the same way.

Do you know any disadvantage to 'fast travel'?
Its' obvious that I can't collect any herbs or find some undetected treasures if I hop from one waypoint to another.

But do I lose something?
Or is there anything not refreshing during the fast travel time?

Best Answer

There is a concoction (can't recall the name at the moment) which increases Geralt HP for every foe killed. But the extra HP gets reset when you fast travel.

Also you might miss some quests on the road (bandits, etc.)