Stuttering and lags on a few occasions despite great hardware

[Razorhunter]

so sometimes lets say every 10 minutes the game has lots of stutters and lags for a short period of time even tho i have really good pc. Any known issues?

[fragrantgoose79]

yeah I bought the game the day you wrote this and after 12 hours of playtime clocked on rdr2 , I finally fixed the stuttering. I tried memory pool boosters, changing CPU BIOS settings, run as admin, set affinities for the CPU in task manager, disabling full-screen optimisations and even tried to get an older game patch out of desperation. Since some certain update it seems a lot of people have been having stutters in towns and sometimes completely randomly.

But finally, I fixed it for myself. Turning on Resizable BAR in the BIOS fixed the issue for me. Initially there were a few right at the start of playing, but after 2 minutes I didn't get another at all for a 2 hour session. Valentine was flawless, Saint Denis flawless too.

I haven't read the exact effects of Resizable BAR but I think it's something to do with video memory athough unlike the other memory associated "fix" I tried, this one works.

I have noticed and wasn't surprised when I saw RDR2 was using a lot of VRAM (just under 12GB) since I think the stutters happen due to RDR2 dumping data it doesn't need causing the stutters. I think Resizable BAR holds that data so RDR2 doesn't need to dump it and stutter.

TLDR : Turn on Resizable BAR in your BIOS settings. I also had Async Compute turned on although that didn't make a difference, at least by itself. Also be prepared for no VRAM for anything else. If this works for even one person I'd be happy as it was a pain to get to the bottom of it myself.

Game settings:
Resolution : 3840 x 2160
Windowed Borderless
Vsync On
Triple Buffering Off
Texture Ultra
AF x16
Lighting Ultra
Global Illumination Ultra
Shadow Ultra
Far Shadow Ultra
SSAO Ultra
Reflection Medium
Mirror Ultra
Particle Ultra
Tesselation Ultra
FSR 2.0 Quality Mode
FSR Sharpening MAX

Graphics API Vulkan
Near Volumetric High
Far Volumetric High
Volumetric Lighting High
Unlocked Volumetric ON
Particle Lighting High
Soft Shadows High
Grass Shadows Medium
Long Shadows ON
FRSSAO OFF
Water Refraction Medium
Water Reflection High
Water Physics 2/4
No Resolution Scale
TAA Sharpening Default
Motion Blur OFF
Reflection MSAA x2
Geometry LOD 4/5
Grass LOD 4/10
Tree Quality High
POMQ High
Decal High
Fur High
Tree Tesselation OFF

PC Specs :
RX 6700 XT
i3 12100F
32GB RAM