With an average of 0.05ms and an O(1) complexity, we can fairly say that Openjdk has solved the GC problem and is now fit for most real time workloads.
The fact that Java now has a superior real time GC than C# make plausible its growth as a language for video games.
I suppose engines like jMonkeyEngine still can not move to JDK 16 because Android is stuck in Java 8?
Well bytecode targeting jdk8 still runs fine on JDK16 and will benefit from ZGC which is bytecode agnostic.