NB! It seems this console command is not compatible with CS2.
Command Profile

SV_DZ_ZONE_DAMAGE

CS:GO

This command sets the amount of damage per second that the "zone" (border) in Danger Zone deals. Default is 1.

Syntax
sv_dz_zone_damage [Damage]

Description

This command sets the amount of damage per second that the "zone" (border) in Danger Zone deals. Default is 1.

How To Use sv_dz_zone_damage

  1. Enable the developer console in Counter-Strike settings.
  2. Open the console with the tilde key (~).
  3. Enter sv_dz_zone_damage [Damage], replacing bracketed arguments with the value you want, then press Enter.

This legacy command is not currently listed as compatible with Counter-Strike 2.

Syntax And Arguments

sv_dz_zone_damage [Damage]
Damage The amount of damage per second the zone should deal.