Really wish that when people benchmark the GC they would include the GC settings they used or at the very least experiment across the several GC’s the VM has to offer.
In each case the default settings were used (i.e. no options were provided). In both Java 8 (Parallel GC) and Java 11+ (G1), As the GC was a small portion of the time, changing the GC wasn't expected to make a difference anyway.