Testing to see the effect of loading resources on Googlebot time.
This test loads 5 resources in a blocking way that each take 100ms to respond. Then it does the same with 5 asyc resources.
As expected, the server indicates the 100ms delay between the first 5 and then more unpredictable delays between the async resources.
In Googlebot time, the only changes were the 1ms increments each time we request the time.