Yes, for those there are real time GCs as well.

https://www.ptc.com/en/products/developer-tools/perc

https://www.aicas.com/cms/en/JamaicaVM

One of the Java vendors acquired by PTC, Aonix, used to sell real time Java implementations for military deployments, including weapons controls and targeting systems.

You don't want a couple of ms pause when playing with such "toys".