Btw, timer is in IG minutes.
Hmm, pre-wipe I had lots dynamites on me, put them on different time, so my body would continue explode later, had demo expert perk, so time was exact.
I can remember put 10 minutes last dynamite, and it exploded in real life 10 minutes, atleast not in 10/20=0.5=30 seconds. Because I waited long time with my fast relogged main character to see explosion, it was much more than 30 seconds... and more than 1 minute and more than 5 minutes, I'm sure.
Edit: Also 5 seconds timer doesn't expire in 5/20=0.25 seconds...