Let's put this to rest shall we

Run this standalone code with Line 1 commented on and off
```
#define EXPERIMENTAL

/world
	loop_checks = 0

/world/New()
	var/datum/Test = new

	var/start_time
	var/end_time

	start_time = timeofday

	for(var/I in 1 to 10000000)
		Test.Whatever()
	for(var/I in 1 to 10000000)
		Test.Whatever()

	end_time = timeofday

#ifdef EXPERIMENTAL
	log << "experimental way took [(end_time-start_time)/10]s"
#else
	log << "regular way took [(end_time-start_time)/10]s"
#endif

	del(src)

/datum/proc/Whatever()

#ifdef EXPERIMENTAL
/datum/Whatever()
#endif

	DoSomething()

/proc/DoSomething()
```

Here are my results:

World opened on network port 18561.
Welcome BYOND! (5.0 Beta Version 511.1378)
regular way took 10s
World opened on network port 18571.
experimental way took 10.1s

World opened on network port 18561.
Welcome BYOND! (5.0 Beta Version 511.1378)
regular way took 10s
World opened on network port 18571.
experimental way took 10s

World opened on network port 18561.
Welcome BYOND! (5.0 Beta Version 511.1378)
regular way took 9.9s
World opened on network port 18571.
experimental way took 10s

World opened on network port 18561.
Welcome BYOND! (5.0 Beta Version 511.1378)
regular way took 10s
World opened on network port 18571.
experimental way took 9.9s

World opened on network port 18561.
Welcome BYOND! (5.0 Beta Version 511.1378)
regular way took 10s
World opened on network port 18571.
experimental way took 10.1s

Conclusion: This makes little to no difference.