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

HOST_FLUSH_THRESHOLD

CS:GO

This command will set the memory theshold for the which host should flush caches between server instances. When below this value, the caches will be flushed.

Syntax
host_flush_threshold [Threshold]

Description

This command will set the memory theshold for the which host should flush caches between server instances. When below this value, the caches will be flushed.

How To Use host_flush_threshold

  1. Enable the developer console in Counter-Strike settings.
  2. Open the console with the tilde key (~).
  3. Enter host_flush_threshold [Threshold], 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

host_flush_threshold [Threshold]
Threshold The threshold that the caches should be flushed under.