No idea what kind of RAM you use, but there is not really RAM for specific tasks.
You have RAM for Desktops or Servers, Non-ECC and ECC (Error correction). That`s it afaik.
Do you have a "correct" configuration of your RAM? Mixed RAM (different speeds, different size).
Or look at the "Default Path" settings in TG. Change them to save to fast a hdd, perhaps.
Are you saving to a network location? Latest drivers for everything? GPU, Chipset, etc?
Enough free harddisk space at all?
Get a program that monitors temperatures and stuff like
https://www.alcpu.com/CoreTemp/That gives you some clues about how your hardware is utilized overall (how much RAM is used, temps etc).
You can see how fast your RAM is filling up
and if it is cleared again.
I don`t think RAM just "dies" because of being used.
Is it getting too hot? What about your Mainboard? Always the same with your "dying" RAM?
Is your PSU strong enough to handle the constant high power utilization when rendering so much?
That is what comes to mind atm.
Are you on Win 10?
CHeers, Klaus