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

DEMO_LISTIMPORTANTTICKS

CS:GO

Use this command for a list of the ticks that the game client determined to be important in a specific demo.

Syntax
demo_listimportantticks

Description

Use this command for a list of the ticks that the game client determined to be important in a specific demo.

Syntax And Arguments

demo_listimportantticks

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Related Commands

demo_pause

This useful console command is used to pause the demo you're watching. Playback can be resumed with the command demo_resume.

demo_resume

This useful command is used to resume the demo you're watching, if you have previously paused it. To pause demos, use the command demo_pause.

demo_timescale

This command sets how quickly the demo is played. In other words, it can be used to fast forward through rounds you're not interested in watching.

demo_togglepause

Use this command when watching demos to toggle between being paused or not. The good thing about this command is then it will pause or play the demo, depending on if its running when the command is entered.

demo_gototick

Forces the demo you're watching to skip to a certain tick.

demo_listhighlights

This command produces a list of the highlights data extracted from the demo you're watching. Data will be pasted into your developer console.

demo_recordcommands

This command records any commands typed into the console and saves them in a .dem file.

demo_info

This command prints to console information about the demo that is currently playing.