ent_pause
🟩 Executable on Server
ent_pause 
Toggles pausing of input/output message processing for entities. When turned on processing of all message will stop. Any messages displayed with 'ent_messages' will stop fading and be displayed indefinitely. To step through the messages one by one use 'ent_step'.
Warning:
 
This is a cheat command and can only be used when sv_cheats  is set to 1.