This to me, still remains a mystery. At the moment, there are two Corona daily builds for Max, one to test fluidity/smoothness/responsivness of UI. I have yet to test it.. I don't really have much time or patience for doing comparison tests. Imho Corona Devs should have just bought one big Threadripper for internal testing if they don't have one, as they keep saying they can't reproduce it.
Nejc above also can't reproduce it.. But I don't agree with his observation about this difference being minor, or only result of lower-clocks. To me, it's definitely very very perceptible. Magnitude difference esp. in Material Editor, which in Corona is generally very slow, even with Material Caching. And it's nothing to do with Custom Previews because Corona Mat Editor is slow even with them turned Off. It's definitely IO problem, just who knows if it's software or hardware side.
But I, with my 3990X, definitely can. SMT OFF helped...why, not sure. And I can't really put my finger on how much this issue is with 3dsMax which dedicates single thread for almost everything (but people with Cinema4D report similar issues), or how much is it with high-core architecture, or with AMD specifically (the multi-die architecture).
Few of my observations:
1) I haven't noticed degradation of performance between Windows 10 or Windows 11. I find 11 to be rather annoying and buggy at some times, but I stick to it since it's necessary for any new hardware from now on.
2) AMD doesn't lose multi-threaded performance on Balanced Power Plan (Intel does..a lot!) but Ultimate Power Plan is still the go-to for instant turbo-boost and helps a lot in multi-tasking.
3) 3dsMax from my observation, still suffers from extended running. I.e, multiple-days opened scene, etc.. So I make sure to avoid doing that.
4) But I also started doing this with Windows. I remember never having to restart PC few years ago, at one point, my PC was running 6 months without shutdown! But I stopped doing this with late Win10 and Win11 because I find some performance degradation stemming from... who knows what.
« Last Edit: 2023-05-20, 13:20:07 by Juraj »
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