I think you are stable, but those subtimings need some work. Try a lower value for tRFC and 1T.
First find yourself a benchmark and run at stock settings to create a baseline. This needs to be something CPU heavy as those will show the biggest difference. I use CSGO.
Then try profiles in your BIOS and see which gives you better results and work from there. This is a very time consuming process and might not be worth it for you. RAM OC is like that, there are gains to be had and you need to be very patient.