I did, and I had that (3950X, 128GB 3600/CL16) PC for reinstall past week. I didn’t find any perceivable difference in sluggishness once I started IR to 3990X. Effectively identical behavior.
I even tested this on i9 7980X and dual-xeon 8280p. Same..
So this is imho 3dsMax/Corona limitation. Either because Windows sees it as one process(with multiple sub-processes) there can’t be any affinity preference given to either process so Corona overtakes the CPU fully for itself.
I didn’t mention or measure Frame rates since I am talking about UI delays, not viewport speed.
i use fstorm and corona regularly, gpu is very very fast but parsing times sucks, i miss the inmediacy of corona when working on fstorm, the same with vray gpu..
"…the GPU version runs all of the same C++ code as regular pbrt to generate camera rays, compute values for low-discrepancy sampling patterns, evaluate and sample lights and BSDFs, filter image samples—pretty much all of the core rendering computation…
And GPUs nowadays are fast… After a little performance work after HPG, now pbrt on the GPU is even faster than it was when I gave that talk. Speedups versus pbrt running on a 6 core CPU are generally 50-100x. If you feel like a 6 core CPU isn’t a fair baseline, then it’s about 10-20x faster than running pbrt on a 32-core Threadripper 3970X"
There’s a video link on the page regarding the coding - this is all well above my paygrade, so maybe the devs could chime in on this? Is this some ground breaking new tech/code, or standard marketing?
Juraj, can you check out my video below? I am curious if you are describing similar performance to this or if it’s actually worse for you for some reason. I would say it’s acceptable for me. I saw some examples of slow 3ds Max UI on a 3970x and I also remember how sluggish it was on a 2990wx. Maybe you could record a similar video so it would be easier to see what kind of lags you mean?
It’s 3ds Max 2021 with all updates, Corona 6 HF1, Ryzen 3900x, 2560x1440 resolution, 2 monitors, GTX 1660Ti.