RTX 5090 very slow while rendering or video/photo editing.

[Murano]

Hello, i could really use help. My RTX 5090 is not using full power when rendering or photo/video editing, even when i use V-ray benchmark i only get 50% of average score for RTX or CUDA benchmark.

I dont have any problems with games, while playing indiana jones or cyberpunk and max details it draws up to 520W for hours and everything is fine even when i run 3D-mark i get legendary score in every test even hall of fame score in steel nomad, so there is no problem with GPU (176ROP is there). Something is slowing it down during rendering, video/photo editing it starts at 360W and slow down to 150W-170W and i really cant figure it out, i searched forums for days and nothing.

I have newest 572.83 Nvidia Driver, clean windows installation, minimum programs running at background (just windows services and logitech mouse), tried max power, high or balanced power plan, GPU pcie switch to 4.0 or 5.0 does not help. Enabled GPU HW acceleration at windows settings and max power draw at nvidia control panel. Tried silent and performance bios on GPU, afterburner is set to 100% power limit. REbar is enabled.

My only idea is that its caused by Windows 10 Enterprise LSCD version, is it possible? if so how can i fix it? I think i had same problem with RTX 4070 before, but i did not solve it because i used CPU rendering back than so it did not bother me that much (CPU rendering is 100% working fine without any problem) Thank you for any ideas.

Full Specs:
Motherboard: MSI PRO z790-A WIFI DDR5
CPU: intel i7-14700kf
RAM: Corsair Vengeance 7200mhz CL34 DDR5
Cooler: Arcric Liquid Freezer III 360mm with P12 MAX fans
SSD: Samsung PRO 990 4TB
PSU: Corsair RM1000x 3.1 2024 - 1000W
GPU: ASUS Astral RTX 5090 32GB OC
OS: Windows 10 Pro Enterprise LSCD

 

[Solaris17]

I think i had same problem with RTX 4070 before, but i did not solve it because i used CPU rendering back than so it did not bother me that much (CPU rendering is 100% working fine without any problem) Thank you for any ideas

So. Then this sounds like a software problem? What do other people with vray say about this?

 

[Murano]

So. Then this sounds like a software problem? What do other people with vray say about this?

I found only one post on vray chaos forum about RTX low score on benchmark -

https://forums.chaos.com/forum/v-ra...nward-rtx-5090-low-scores-problem#post1229551

And its without reply. But its not only rendering i also get very slow video/photo editing, power usage is same only about 120-170w and it takes more than 40min to 4x upscale 20min video via Topaz.

It seems like software problem to me, but i am no expert.

 

[freeagent]

These cards are like a herd of wild unicorns that were separated at birth, because like no one has them or has seem them.. just in pictures

I would wait until they have been around a little longer.. but really I am just talking out of my butt now I just wanted to say the first part

 

[Toss]

yes, reviewers are casuals who actually never use product.
RTX 5090 doesn't support TensorRT yet
CUDA programs unoptimized and not updated to Blackwell architecture.
Rife AI engine - not working.
Davinci Resolve not working yet (I am getting 900 fps with 4xxx series and was getting 300 with RTX 5090).
Basically it's a raw product, you are beta tester and will have to wait 2-3 months till software catch up.
Gaming is last thing I use GPU for and that's doesn't even matter for me.

I was very amazed when I bought RTX 5090 last week for 4500$ to figure out 3 months after release 0 support for pro workflows.. Thx God returned that and saved money and sanity. Will buy RTX 5090 in summer-autumn when the programs will catch up with software

I was also getting black screens, nvidia drivers are RAW too. Desyncs in youtube playback when playing at 2x...

 

[Macro Device]

I remember seeing a very similar problem with a Blackwell card in gaming. Don't remember word-to-word but you should go to NVIDIA App, select the software you're having problems with and enable the "Full Performance" mode or something like that.

If that doesn't help then blame NVIDIA for bad drivers.

 

[lambda]

@Murano Maybe try using the professional drivers or whatever they are called.

yes, reviewers are casuals who actually never use product.
RTX 5090 doesn't support TensorRT yet
CUDA programs unoptimized and not updated to Blackwell architecture.
Rife AI engine - not working.
Davinci Resolve not working yet (I am getting 900 fps with 4xxx series and was getting 300 with RTX 5090).
Basically it's a raw product, you are beta tester and will have to wait 2-3 months till software catch up.
Gaming is last thing I use GPU for and that's doesn't even matter for me.

I was very amazed when I bought RTX 5090 last week for 4500$ to figure out 3 months after release 0 support for pro workflows.. Thx God returned that and saved money and sanity. Will buy RTX 5090 in summer-autumn when the programs will catch up with software

I was also getting black screens, nvidia drivers are RAW too. Desyncs in youtube playback when playing at 2x...

This comes as a surprise to me, I thought it was only AMD with god awful track record of supporting stuff via ROCm.

I might have to reconsider my decision to get a 7900xt but Nvidia GPUs are way too expensive assuming you can find one in stock. Even then they are stingy with VRAM capacity.

 

[Murano]

Ok so i tried Blender 4 benchmark and it went fine, it takes 350-400W all the time and score is 16211, above average (14762) for RTX 5090. Also tried to run 3 videos upscale in topaz at once and it took almost same time but i had 3 videos edited at once. So only Vray problem stays and i really suspect Windows LSCD copy, like i said i had this same problem on borrowed rtx 4070 ventus last year on same OS. I will try to instal newest MSI bios on my motherboard and if it will not help i will try Win 10 Pro or 11 Pro.

To be honest i did not experience single problem with this RTX 5090. I have it almost for a month now and nothing, its just perfect, i cant hear it even when i pull 600W from it, no CW no fan noise, gaming experience is flawless, did not have single BSOD, black screen, freeze, crash or anything people are talking about. I am also using old CAD programs 2005-2010 versions and everything works fine. Power consumption is only 17W in idle (3440x1440 ultrawide HDR 144hz 10bit G-sync) so i cant say anything bad about this card, its my first high-end gpu in almost 30 years i am using computers and i am very happy about it. I dont know if i was just lucky or there are only few very loud people who should go for RMA with their faulty GPU.

 

[W1zzard]

Vray

Does V-Ray even have official support for Blackwell yet? Check with their support

 

[Murano]

Does V-Ray even have official support for Blackwell yet? Check with their support

There is whole blog about it on chaos forum :

The RTX 5090 Performance, Thermals and Power consumption - Chaos Forums

Introduction, Nvidia has encountered some challenges this generation. Although the RTX 50 series uses cutting-edge technologies like PCI Express 5.0 and GDDR7 memory, it is still using the same TSMC 4N process as last generation. Nvidia opted to create a larger and more powerful GPU. The die...

forums.chaos.com

"the current builds of V-Ray 6 and V-Ray 7 support Blackwell GPUs out of box, no changes are required."

RTX rendering should be supported since 50 series launch, CUDA rendering was added later. I tried both, cuda is not working at all for me, i get very low score and slow rendering, even when i try CPU + GPU hybrid rendering, RTX is working better but like i said only about 50% of what it should be

 

[tugrul_LordOfDrinks]

I get 12k points with 5070+4070 in rtx api and, 7500 in cuda api, total number of cores =12000.

So you should at least get 15k-20k. Im using pxie 5.0 16x + 4.0 x4 lanes. Perhaps your gpu is on chipset lanes and not directly from cpu? Games dont require many lanes.

Perhaps you just need performance mode enabled from winsows or nvidia control panel.

 

[Murano]

I get 12k points with 5070+4070 in rtx api and, 7500 in cuda api, total number of cores =12000.

So you should at least get 15k-20k. Im using pxie 5.0 16x + 4.0 x4 lanes. Perhaps your gpu is on chipset lanes and not directly from cpu? Games dont require many lanes.

Perhaps you just need performance mode enabled from winsows or nvidia control panel.

Yes RTX score should be about 15k, in CUDA i only have about 3200. I checked PCIE via Gpu-Z and its 5.0x16, its the only 5.0 slot on my MB so it should be conected to CPU, but good point to check it, thanks.

I did try performance mode in nvidia control panel, in windows settings, i even set max performance for Vray benchmark in GPU windows settings, also set high priority for vray benchmark, did not help.

 

[Murano]

Ok so clean installation of Win10 pro did not help, updating MB bios did nothing too, so its V-ray problem, i contacted their support and send them logs from benchmark. Thank you all for your help.