Another DoT question (RR)

Does the damage of time (DoT) tick change when the resist reduction (RR) change after the DoT was applied?

For example, the monster is hit with 10000 poison damage over 5 sections (2000 per second tick), when hit the monster has -20 RR.

Tick 1: 2000 damage + extra damage from -20 RR
Tick 2: 2000 damage + extra damage from -20 RR

Before Tick 3 the RR ends.

Tick 3: Does the monster still take the extra damage from the RR applied when the original DoT was applied?

Example 2: The monster is hit with 10000 poison damage over 5 seconds (2000 per second tick), when hit the monster has no RR.

Tick 1: 2000 damage

The monster gets a -20 RR applied.

Will the monster take extra damage on tick 2 because of the RR?

Fairly certain that it’s the case that each tick checks the resistances of the monster individually, somebody please correct me if I’m wrong.

Given that, in the case where the RR goes away the third tick would do less damage than ticks 1 and 2. It would have the same BASE damage of 2000 but the actually applied total damage value would be lower because the resistance of the target has gone up.

In the other case, yes, more damage will be received in future ticks. Again, the BASE damage will remain the same at 2000, but the decreased resistances will apply to that value to increase the total amount applied.

AFAIK it MUST be checked every tick, because of various chance on attack or chance on crit procs that can alter the damage mid duration. I’d assume that also means RR gets checked.