Chaos Corona for 3ds Max > [Max] Tutorials & Guides

3ds max + Corona + Windows = Finally good performance

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1equals2:
I would like to add few additional insights, although not specifically related to the "Defender" thing.
Still using one machine here, but noticed considerable decrease in performance and stability after several Windows 10 updates, which occurred around end of March.
It was mostly related to 3ds max instability, frequent freezes which eventually influenced Corona experience.
Made investigation as read a post somewhere that the following windows 10 updates "B4535996, KB4540673 and KB4551762" can cause some serious trouble.
Happened to have had  installed the latter and after removing it - back to normal.

Completely support the idea that we need to organize a windows 10/3ds max file or note where to put most common software related stuff that might be the real culprit behind some of the issues people are experiencing.
I am personally working from a network and almost every single file becomes  quite slow at certain point. Trying to avoid keeping multiple 3ds max instances opened as well, but... avoiding is not a solution. :)
Still using 3ds max 2018.3 but it is bit sluggish in UI, bit slow and more unstable than 3ds max 2018. Tempted to try most recent versions, but really do not want to go down the rabbit hole.

Okmijun:

--- Quote from: erisbejbe on 2020-02-26, 03:36:33 ---Hello everybody!

I've opened this thread only to share this few basic tips which are a result of two years of problems and recently improved my performance drastically.


[short introduction]

I've just opened an account on this forum just to tell you this important information regarding performance. I've been using Corona as my main work tool since version 1.2. I work as an interior designer and Corona has become my main tool even though I am very skilled in Vray. Over the years I've been having CONSTANT problems with various versions of 3ds max and Corona and of course - windows. Many don't understand how many bugs are produced by bad 3ds max architecture (nothing to do with Corona), and even worse bugs are produced by windows. Like many, i just need things to WORK because my business depends on it. Every one of this tips has been tested and verified over and over and trust me, I have had crazy 12-hour full exterior overnight projects and I really know what I'm talking about.


[technical tips]

-I will start by saying: if you use Corona and 3ds max you absolutely HAVE TO use Windows PRO , not home and lower variants.

-(most important tip)- DISABLE windows defender, DISABLE firewall. Now, I've done this years ago in windows defender and in control panel and it didn't work. It's very important to do this by group policies editor in Windows pro and up and/or via registry editor. Only that way will completely disable it.
Explanation: it solves the most annoying performance hitter which is (LONG) waiting every time you start up 3ds max, close 3ds max, start rendering, stop interactive or regular rendering, loading maps, merging files, etc etc... This will save you so much time its crazy. Windows architecture is set up in a way that somehow has to scan and check all the files that come in through RAM and that is the main reason for slow performance.

-in my experience, 3ds max 2017 and 2018 were the last versions in which i am able to reach peak performance. Later 2019 and 2020 have issues admitted by Autodesk and not yet fixed. The improvements do not outweigh the problems.

-you don't need to use 3ds max as administrator, it gives you problems when merging files.,


These tips finally gave me the perfect experience. No crashes, no waiting, just work. Hope it helps.



Specs:

Threadripper 3970x
256GB ddr4 ram
2x1TB nvme samsung 970 pro raid

--- End quote ---

For all those who missed this LIFE SAFER topic, I am bumping it...
I tried most of advices here...and now I can go to coffee!
As at least 30-45mins you will get per day, if you work 8-10h
it is hard to calculate ofcourse, but all those waitings are now GONE FOREVER.

It is literally like upgrade from Coppermine PIII to C2D.
when working in 3dsmax, max is responding IMMEDIATELY, almost...!
Thanks everybody for writing in this topic...Cheers!

Jpjapers:
Could anyone explain more about how to set up the group policy level disabling of windows defender for corona/max?

Juraj:
It's just making sure it's more permanently disabled through Local Group Policy Editor (just type after hitting Start button), but it's not so bulletproof, I wasn't able to eradicate Copilot from Win11 by using this :- ) Windows have plenty of ways to override even group policy these days.
To disable Real-time protections through LGPE you also have to disable Anti-Tamper before in Security settings otherwise it will reset after restart.

I wouldn't say it's the smartest thing to do in this age, majority of performance will be recouped by exempting 3dsMax.exe from most Real-time protections.

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