Does the rest of the scene stutter when the piston rods do? Or just the rods?
Tane really does need 16 gigs of ram. But i don't think thats yer problem.
And with your system being a few years, it may not be too expensive to buy all new ram so you can get VERY FAST RAM.
I think people underestimate what very fast ram can do for a computer.
The clock rate of main ram is one of the most neglected computer specs ever.
If it were my system, id start with buying ram that could go faster than my motherboards max ram speed, and 16 gigs of it at least.
But that is only if you can set the clock settings on the ram in your bios, some computer makers are now getting rid of the ability to configure almost anything in bios or anywhere else.
--->If anyone is still running a computer today with their OS and games on a non-solid state hard drive they have already turned down a dead end.
Even old systems NEED a ssd.
I also would not use windows 10. Tane came out before windows 10, it was targeted for windows 7. And microcrap has never released an os that worked properly within 4 years of its release date.
Are you monitoring your system specs somehow, WHILE running tane? (temp of cpus, ram use, video use, cpu use, hard drive access rate, etc)
I have a second monitor that I put meters on that tell me readouts of my entire system.
This lets you see where the problem might be due to some readout going full tilt during the stutter.