Ok, after 6 hours of troubleshooting I seemed to have fixed my stuttering issue for the most part… This bug is universal and seems to be different for everyone. It seems like a driver issue that Bliz/Nvidia need to get together and fix, but this is what worked for me. I am going to list everything so sorry if this is TLDR for most peeps, though I do think ONE thing was the ultimate fix for me and I will discuss that at the bottom. Anyway here we go.
My Rig:
i5-7600k
3090
32gb ram
Game settings:
V/S disabled
Limit Cut Scene disabled
Periph lighting on
DLSS set to DLAA
Max Foreground FPS 237 (My monitor refresh is 240 adjust yours accordingly)
Max Background FPS 237
Reflex Enabled
Quality Ultra
Sound manually set output device
Social Cross-Network both are disabled
In windows device settings RRAS and Device Association Root Enumerator are disabled as previously covered in this forum
Nvidia Control Panel (Global):
Image Scaling On
Ambient Occlusion Performance
AS Filtering 16x
AA FXAA Off
AA Gamma On
AA Mode App controlled
AA Trans Off
Background Frame Rate Off
CUDA All
DSR Factors Off
Low Latency Mode On
Max Frame Rate Off
Monitor Tech G-Sync Comp
Multi-Frame AA Off
OpenGL GDI Auto
OpenGL Rendering GPU Manually set to my 3090
Power Mgt Normal
Preferred Refresh Rate Highest Avail
Shader Cache Size 100 GB (10 should work fine I just over did it because I have the space)
TF Aniso On
TF Negative LOD Allow
TF Quality - Quality
TF Trilinear On
Threaded Opt Auto
Triple Buff Off
Vert Sync Off
Nvidia Control Panel Diablo IV Specific Settings:
Max Frame Rate 237
Vert Sync On
Battlenet Settings>App>Advanced Features “Use browser hardware acceleration” disabled
What I think ACTUALLY fixed it for me was two things. One setting the cap on framerates to 3 fps lower than my monitors refresh rate AND matching that with the in game FPS Background/Foreground. Once I did these to things most of the stuttering went away and I have 140 to over 200 FPS (stable and normal fluctuations). It isn’t perfect. There is still small amounts of stuttering (minuscule in comparison), but the gameplay is fine except occasional stutters when loading new areas and high congestion large graphic changes (like riding my horse through new areas). The leftover stutter I am still experiencing, IMO, can be attributed to my old i5-7600k not being able to give my 3090 instructions in time (upgrade inbound). Anyway, these settings worked for me, hope it works for you.