I’ve been trying to solve persistent rubberbanding, microstutter, and short lag spikes in Sea of Thieves, despite running the game on a very powerful system. The stutters mainly occur when the game loads new assets (going on land, enemies spawning, new areas, sudden events, etc.).
The key point:
Every other game I play runs perfectly — no stutter, no lag, no issues at all.
This problem is exclusive to Sea of Thieves.

My System Specs

• GPU: Nvidia RTX 5080
• CPU: Intel 9800X3D
• RAM: 32 GB DDR5 6400 MHz
• Storage: NVMe M.2 SSD
• Monitor: 49" ultrawide (5120×1440)
• Mouse polling rate: tested 1000 Hz and 500 Hz (500 Hz reduces stutter)
• Network: wired connection, modern network card
• Software/Firmware:
• Latest Nvidia GPU drivers installed
• Latest BIOS version installed
• Latest chipset drivers installed
• Windows fully updated
• Monitor firmware up to date
  Everything on the system is fully updated to the newest available versions.
  The hardware is far beyond what the game requires.

Graphics Settings & Display Testing
I’ve tested every possible graphics combination:
Graphics settings

• All presets tested: Low, Medium, High, Ultra
• All individual settings adjusted
• Only one setting noticeably affects stutter:
  Model Detail = Medium (less stutter than High/Ultra)

Resolution & scaling

• Native ultrawide resolution
• Tried downscaling the resolution
• Tried different scaling modes in Nvidia Control Panel
• Fullscreen, Windowed (Fullscreen is best)

FPS caps

• Tested 60, 90, 120, 144 FPS
• Tested Uncapped
• Stutter happens regardless of FPS limit

Sync & latency

• V‑Sync off in-game
• V‑Sync off in Nvidia Control Panel

Nvidia Control Panel

• Low Latency Mode = Off
• V‑Sync = Off
• Confirmed the game uses the RTX 5080
• Tested different power modes (Adaptive / Prefer maximum performance)

Windows & System Settings

• Hardware Accelerated GPU Scheduling (HAGS) disabled
• Xbox Game Bar + all capture features disabled
• Shader cache cleared
• Tested both latest and older Nvidia drivers

Mouse & Input

• 1000 Hz polling → more stutter
• 500 Hz polling → smoother
• DPI and Windows sensitivity adjusted

Network & Network Card Troubleshooting
I’ve also ruled out network issues:

• Wired Ethernet connection
• Tried different router ports
• Restarted router/modem
• Updated network card drivers
• Disabled offload features (LSO, checksum offload, etc.)
• Tested with and without IPv6
• No packet loss or instability in any other online game
  All other online games run flawlessly, so this is not a general network problem.

Other Tests

• Tried running the game on a secondary monitor
• Disabled overlays (Discord, Steam, Nvidia, MSI Afterburner)
• Ensured the game does not launch on integrated graphics
• Tested clean Windows boot with minimal background processes
• Tried different window modes
• Tried different USB ports for the mouse

Current Conclusion
Despite all of the above, rubberbanding and microstutter still occur during sudden events in Sea of Thieves.
Since every other game works perfectly, this strongly suggests the issue is related to:

• Sea of Thieves’ asset streaming system
• An engine-level bug that becomes more noticeable on high-end hardware
• A conflict between Windows, Nvidia drivers, and the game’s rendering pipeline
• Reflex/latency-related bugs specific to this title
  It does not appear to be caused by my hardware or my system configuration

Does anyone have a solution or workaround?
At this point I’ve exhausted every option I can think of.
If anyone has experienced similar issues — or found a fix, workaround, or even a theory — I would really appreciate any input.