threadripper 2990wx lags while using Interactive rendering in corona

[arpit077]

Hi, I have a small question if someone is also experiencing the same problem. I have a system with 32 core threadipper and currently using rtx 2080 + gtx 1070 cards. Two monitors. When I am working with 3dsmax. The system runs smooth. But whenever I start either Interactive rendering or Rendering with corona. Whole system performance goes equivalent to Pentium 4 system. That means, Using Interactive rendering, if you even click at viewport or change anything, it takes about 10 min to get updates and whole 3dsmax UI starts lagging. Even if I move a UI panel, it takes it 10 to 20 min to update it. It only happens when I am either rendering or using Interactive Mode. Any idea's what could be the issue?

I will appreciate any help regarding this. So far, I have monitored CPU and GPU temps, they do not go that high, I have done stress testing, All seems to work. I have tried to install and uninstall also. Nothing seems to work.

[TomG]

As a note, NVIDIA AI denoising is not enabled in either final render, or "Fast preview denoise" for IR, apparently.

[arpit077]

No, I turned off Fast Preview and recently I also tried limiting the number of cores to 25 during Interactive but the problem still remain same.

[speltospel]

Have you solved your problem? I wonder how it ended

[denisgo22]

Hi, I have a small question if someone is also experiencing the same problem. I have a system with 32 core threadipper and currently using rtx 2080 + gtx 1070 cards. Two monitors. When I am working with 3dsmax. The system runs smooth. But whenever I start either Interactive rendering or Rendering with corona. Whole system performance goes equivalent to Pentium 4 system. That means, Using Interactive rendering, if you even click at viewport or change anything, it takes about 10 min to get updates and whole 3dsmax UI starts lagging. Even if I move a UI panel, it takes it 10 to 20 min to update it. It only happens when I am either rendering or using Interactive Mode. Any idea's what could be the issue?

I will appreciate any help regarding this. So far, I have monitored CPU and GPU temps, they do not go that high, I have done stress testing, All seems to work. I have tried to install and uninstall also. Nothing seems to work.

Same problem with same AMD:(
But on I-7 5820K always ok

[speltospel]

when I thought about changing my workstation and decided to switch to AMD. after seeing dozens of tests. now i see it. Is this a real serious problem or a special case that can be solved?

[GeorgeK]

Had exactly the same issue with 2950X, 3 same machines but only one of them lagged as you've explained. In my case it was a bad OC done from previous user in the office, after I restored things were better but not by much. I performed a clean windows 10 format/install and the issue persisted. So again like you with 2080 gpu too, we had installed the MSI afterburner and for some reason really boggled down the computer when using 3ds max and especially after rendering tests or IR. Similar issues I've experienced with EVGA's software for GPU. Please check if you are using some afterburner/oc apps.

One extra thing to note the current build had different motherboard than the rest two an Aorus motherboard, which in my personal experience was really really bad. Don't know if it was just the specific hardware or in general this motherboard line, also the employer had slow RAM's installed too, like 1866MHZ ddr4....

How many slots of your ram are you occupying? What it's MHZ? This is worth looking https://www.pcworld.com/article/3298859/how-memory-bandwidth-is-killing-amds-32-core-threadripper-performance.html

[sprayer]

did you tried to reduce used cores count for example from -1 to -6?

[speltospel]

Had exactly the same issue with 2950X, 3 same machines but only one of them lagged as you've explained. In my case it was a bad OC done from previous user in the office, after I restored things were better but not by much. I performed a clean windows 10 format/install and the issue persisted. So again like you with 2080 gpu too, we had installed the MSI afterburner and for some reason really boggled down the computer when using 3ds max and especially after rendering tests or IR. Similar issues I've experienced with EVGA's software for GPU. Please check if you are using some afterburner/oc apps.

One extra thing to note the current build had different motherboard than the rest two an Aorus motherboard, which in my personal experience was really really bad. Don't know if it was just the specific hardware or in general this motherboard line, also the employer had slow RAM's installed too, like 1866MHZ ddr4....

How many slots of your ram are you occupying? What it's MHZ? This is worth looking https://www.pcworld.com/article/3298859/how-memory-bandwidth-is-killing-amds-32-core-threadripper-performance.html

Have you tried updating the bios of this bad motherboard?
what kind of manufacturer?

maybe memory really slows down rendering?

[Juraj]

Some advice for Threadrippers:

- Run the latest bios, the early ones were troublesome.
- But also run the latest Windows 10 upgrade and chipset drivers. It has much better Zen architecture support.
- Don't manually overclock, and disable every bios crap that does so, like game-mode in MSI,etc..
- If you must, run PBO, anything else sacrifices your single-core performance.
- Run ultra-performance power-mode, or Ryzen high-performance power mode.
- Don't install Ryzen Master or any board-maker utility that changes clocks,etc. Always run everything from bios(uefi).

General 3dsMax smoothness:
-Run latest graphic drivers.
-Make sure you don't run out of GPU memory. If you only have 8GB of Vram, don't run higher than 2k textures in viewport, and don't open more than two scenes at same time. Ideally, only open them, but only work on one, close the other.
-The moment you run out of GPU memory (Optix denoising also uses it, so does Photoshop,etc.), 3dsMax viewport will go from 50 FPS to 0.5 FPS. Death.
-Uninstall (there is code for it online) native Windows 10 image viewer (APP named "Photos"). Bring back Windows7 App ("Photos Viewer"). Photos is just crappy app that really slows down everything.
-Run -2 Threads on workstation/master-PC for both regular and IR rendering.

[Rhodesy]

Some good sounding advice. Thanks for sharing. I have a 2970wx machine that really seems to struggle when rendering full-res final output. I get the Max Windows dance and the machine becomes totally unresponsive until its finished rendering. It also struggles when I have Max and Photoshop open at the same time.

Photoshop can really lag (also with my previous AMD 16 core build) but I'm starting to think the 'photos' app you mentioned might be one of the culprits as it does sometimes improve when I close that. Does anyone else get serious photoshop lag? I never used to when I had intel machines. I will often have a few Max sessions going at once though, especially if they are big files that take an age to open but I'm trying to rein that in too. I thought with 128GB RAM I should easily be able to handle all this stuff but it seems there are other factors at work so I will go down your list!

Thanks again.

[GeorgeK]

Had exactly the same issue with 2950X, 3 same machines but only one of them lagged as you've explained. In my case it was a bad OC done from previous user in the office, after I restored things were better but not by much. I performed a clean windows 10 format/install and the issue persisted. So again like you with 2080 gpu too, we had installed the MSI afterburner and for some reason really boggled down the computer when using 3ds max and especially after rendering tests or IR. Similar issues I've experienced with EVGA's software for GPU. Please check if you are using some afterburner/oc apps.

One extra thing to note the current build had different motherboard than the rest two an Aorus motherboard, which in my personal experience was really really bad. Don't know if it was just the specific hardware or in general this motherboard line, also the employer had slow RAM's installed too, like 1866MHZ ddr4....

How many slots of your ram are you occupying? What it's MHZ? This is worth looking https://www.pcworld.com/article/3298859/how-memory-bandwidth-is-killing-amds-32-core-threadripper-performance.html

Have you tried updating the bios of this bad motherboard?
what kind of manufacturer?

maybe memory really slows down rendering?

It was Gigabyte Aorus don't exactly recall the model, but for TR gen 2, the RAM he had chosen was really cheap and bad, slow clocks not even heat-sinks on them, no wonder everything lagged on that PC even after updating everything. Thankfully we had the other two that were order some days later than the problematic one and they worked perfectly fine and as expected, everything brand-wise was nice on them.

[Nejc Kilar]

If you are on the high core count 2990wx try disabling SMT / Hyperthreading. I have quite odd issues on my 2x 2696v3 when I have more than 36 cores / threads enabled. Give it a go see if it helps. If it does, blame Windows I guess and join us mortals working with a 30% speed reduction :)

[Juraj]

not even heat-sinks on them

Memory doesn't need heatsink, it's only for branding/marketing. In fact, it often only makes things worse.

I thought with 128GB RAM

System memory doesn't drive visual performance, GPU memory does. Also, when you open high-res files in any way (like rendering finals in framebuffer, Photoshop files,etc..) it will eat up your GPU memory. You can limit how much you allow Photoshop to use of your GPU memory in settings.

To speedup working with high-res framebuffer in 3dsMax, disable 'show preview while moving' in Windows Advanced system options. It will only show white silhouette while moving the windows, otherwise framebuffer with 8k image is absolute freeze-fest.

[Marijan]

I also have 2990wx with X399 Aorus Xtreme, 64GB 2933 RAM, GTX1080ti 11GB and I'm facing same problems as Rhodesy and arpit077 are describing.
I tried every possible solution i could find online, keep windows, drivers and bios updated and the only thing that seems to somewhat help is to lower the number of cores for rendering and IR.
I hope some of Juraj advices will help.