Hi,
3ds max works really bad with more than one instance of the program. When one max is thinking, the other one is slowed down to a crawl, mouse click quad menus have 5-10 second delay and much more is crippled. The only way to make it work is to set afinity without just one core. On my ryzen 5950x with 32 cores i just have to unchech fist core in every max instance (2-10 instances depending on my work) and it works.
Please add an option to run max without one or more cores. it really makes a huge difference. Of maybe make them not interfere with one another.
PS i hae 5950x + 128GB Ram + Nvme drive + rtx 3060 12GB. Those instances of max never use more than 50% of ram, 20 of GPU and 10 of CPU. It is not a hardware issue. The same happens on other 5950X, i7 6700k, i7 7700k, i7 8750h, i7 4960,, threadripper 2990WX machines.
Make it fly!