I love that game. Would play through all of it again in amazing graphics

hmm hope it will good-optimized one

Just installed a GTX SLI setup and its working out of the box for me with no nvidia inspector profile tweak, so its supposed to support SLI out of the box i guess?
25-30 FPS Single Card  and 50-62 FPS in SLI at ULTRA but minor the Water quality is low cause i wanted to be able to HIT 60 FPS on a ULTRA WIDE 1080p 35''
It does somewhat scale properly but the image is a bit flickery not INSANELY MAD but enough to be a bit turn off. 
It feels less flickery with a single card, but u can really feel the 25-30 FPS so its not fun either. 
Verdict ima quit playing this game until i can grab a 3080 from the shelves maybe in 2 years from now i guess..
 

Stewey31
Just installed a GTX SLI setup...

Which GTX cards are you using?

Flonkam

Stewey31
Just installed a GTX SLI setup...

Which GTX cards are you using?

1070 FTW max OC with EK waterblocks at 2157mhz

such a shame xfire and SLI are dead, fun to mess with. And just imagine two 3080s haha

I did try 1080 TI SLI max OC watercooled, Not sure why it didint work properly... did try to mess with profiles a bit, was VERY buggy. 

 

 

 
Ultra and slider to max graphics. 

QueueCumber
Alright, here is the play by play on my process of getting 3090 SLI or NVLink to work in Red Dead Redemption 2 (RDR2) Vulkan mode (for those who may have the same issues I experienced).
 
***Make sure SLI is enabled in the Nvidia Control Panel***
 
1) First issue was getting RDR2 to run at all with SLI Enabled in the NVidia Control Panel. Without this change, my SLI would just result in black screens with sound for both the benchmark and the game itself.
 
[a] Solution: changing transferQueuesEnabled from 'false' to 'true' in the system.xml file located in C:\Users\*****YOUR USER NAME ON YOUR PC*****\OneDrive\Documents\Rockstar Games\Red Dead Redemption 2\Settings\system.xml
Make sure to edit in notepad and not to allow any formatting changes to be made or added. Also, the file won't show the lines that you need to edit unless you open it in something like notepad or txt edit (xml viewer hides the lines for some reason...).
 
 
2) The next issue was getting the SLI to actually enable for the 3090s. This I suspect has to do with some kind of conflict between programs accessing and changing the nvdrsdb0.bin and nvdrsdb1.bin files independently of each other for some reason. 
 
[a] Download and install nvidiaProfileInspector.
Change the following settings on Red Dead Redemption 2 profile:

• In section 5 - Common: change Power Management Mode to Prefer Maximum Performance
• [optional] Antialiasing - SLI AA to Enabled
• Change the 'Number of GPUs to use on SLI Rendering Mode' to '0x00000002 SLI_GPU_COUNT_TWO'
• Change the 'NVIDIA predefined number of GPUs to use on SLI rendering mode' to '0x00000002 SLI_PREDEFINED_GPU_COUNT_TWO'
• Change the 'NVIDIA predefined SLI mode' to ''0x00000003 SLI_PREDEFINED_MODE_FORCE_AFR2'
• Change the 'SLI rendering mode' to '0x00000003 SLI_RENDERING_MODE_FORCE_AFR2'

 
[c] After applying the above changes immediately change the nvdrsdb0.bin and nvdrsdb1.bin files (Location: C:\ProgramData\NVIDIA Corporation\Drs) to 'read only'

• Note: You will have to go to Appearance and Personalization in the Folder Options in Control Panel and select 'Show Hidden Files, Folders, and Drives' to access these easily.

 
That is what worked for me at least. The video I found for part two above was helpful only for the above info, so I didn't bother posting it. Some of the other info in the video is misleading (like using GTA V profile instead of RDR2 profile) and didn't make any difference for me. Hope this helps someone. I think most of the info above in step one was in this thread, but not sure; I was all over the place yesterday to find a combination that would work for me.
 
 

this worked for me perfectly. Dual 3090 KPs and 3970x @3440x1440
150FPS average
60FPS 1% lows
in the canned benchmark with absolutely everything maxed and identical to sajins settings on pg1 of the thread

with dlss support comming tomorrow will be interesting to see how much FPS changes

Are you guys using 3 slot nvlinks? Or get the godlike mobo?