I haven't notice any difference between Win11 and Win10 as far as performance. Maybe it has to do with my machine config.

One thing I got confused about after I first installed Win11 was I thought I was supposed to be using Win12. I was getting my Poser 11/12 mixed up with my Win11/12! I had to repeat over and over, "Poser 12, Win 11, Poser 12, Win 11."

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W11,Intel i9-14900KF @ 3.20GHz, 64.0 GB RAM, 64-bit, GeForce GTX 4070 Ti SUPER, 16GB. 

Old lady hobbyist.

All visual art or fiction is "playing with dolls."