How does + duration work?

I have a item that is +52% Poison damage with +33 increased duration.

If its like 662 poison damage over 6 seconds, that would be

1006 poison damage over 8 seconds

which would basically just bring the poison damage up by like 19%

If i understand this right, just strictly + psn% would be best?

change the fuqen numbers. I’m not gonna calculate here.

More duration = more ticks and thus more “on attack” and “on crit procs”.

Duration has no effect on the damage per second.