@COSDpool are you still using these RTS settings as stated in your previous post?
I have tried similar and still got a couple of missed slot leader checks when a GC event happened. I ended up switching to using --nonmoving-gc setting. With this setting alone, I never get any missed slot leader checks, but memory use progressively increases, as it is not freed back to the OS, so I have to restart my node very day or so. Since I run a small pool, this isn’t a problem for me because at least I can time when the restart happens whereas I can’t forecast when the GC will run.