FIX: Severe Stutter, Packet Loss, and Low FPS on 8> cpu core AMD CPUs
TL;DR / Quick Fix for Players:
If you have an AMD processor with more than 8 cores, the game's Frostbite engine is trying to talk across the separate physical blocks of your CPU. This cross-communication is exactly what is causing your massive input lag and stuttering. To fix this, download a free software called Process Lasso to change your CPU affinity, forcing the game to run on just a single CPU block.
(Note: Other users have also reported that ensuring your RAM's Extreme Memory Profile (XMP/DOCP) is enabled in your BIOS helps mitigate the severity of the issue).
Bug Report & Technical Breakdown for EA Developers
1. Symptoms & User Experience
When playing on enthusiast-tier hardware, the game becomes virtually unplayable out of the box. (RTX 5070 Ti, Ryzen 9 5950X, 2X16GB 3600MHz DDR4 ram, X570 UD MOBO, Windows 10)
Symptoms include:
Abnormally low FPS
Severe micro-stuttering
High input lag
Constant yellow packet loss symbol
Time Nudge is in the hundreds
Enabling Frame Generation makes all of these issues significantly worse
2. The Core Issue: Dual-CCD Thread Scheduling (Frostbite Engine)
The Frostbite engine's thread scheduler scatters primary game-loop threads across all available cores, regardless of the physical CPU architecture. This forces the cores to communicate across the slow internal bridge instead of utilizing the localized, ultra-fast L3 cache. This massive cross-CCD data transfer bottleneck is what directly causes the severe stuttering and lag.
3. Expected vs. Actual Performance Metrics
Without Fix (Default Engine Behavior): Task Manager shows scattered, high utilization across all 32 threads (often reporting 90%+ overall CPU usage due to micro-stalls and wait states). The GPU render time outpaces the CPU drastically, resulting in a "CPU to Client Limited" scenario at ~40 FPS with a heavily underutilized GPU sitting at roughly 45-50% capacity.
With Fix (Manual Core Affinity): By restricting the launcher to Threads 0-15, the Frostbite engine is physically fenced onto a single CCD. Task Manager shows 100% utilization on the top two rows (Threads 0-15) and near-idle usage on the bottom two rows. GPU utilization spikes, and the framerate immediately jumps to a stable 90+ FPS.
4. Action Requested: Please update the Frostbite engine thread scheduler to correctly identify AMD CPU topologies and automatically confine primary game-loop threads to a single CCD, mirroring the optimization strategies currently used for monolithic 8-core console APUs.