Mod API Reference:TickCount
From Warzone Wiki
Mods can call the WL.TickCount() function to return an integer that represents the number of milliseconds at any point in time. This is useful for profiling code to measure how long certain code takes to run. To do this, call WL.TickCount() before and after the code you want to measure and subtract them to determine the number of milliseconds that the code took to run.