Project P.I.T.T. Height Countdown
The official Project P.I.T.T. hint for disabling the five-second height countdown, separated from unverified solution details.
The official FAQ confirms that the five-second height countdown can be disabled and gives a direct hint: look at the pillars around the map. It does not publish the complete current-build solution, so this page does not pretend the missing steps are known.

Start with the official hint
Use the pillars as the first investigation target. The important current answer is that the timer is not necessarily permanent; the FAQ explicitly says it can be disabled.
Do not turn a hint into a walkthrough
The source does not identify every trigger, location or condition. This site keeps an unknown solution unknown until it can be sourced or reproducibly verified.
Primary source: Official Steam Community launch FAQ ↗. Scope: demo.
A source-check date is not an in-game test date. Historical fixes and community observations retain their stated scope.