Space Marine 2 performs differently from most demanding games: it’s CPU-bottlenecked even on high-end hardware. At 1080p Ultra, the GPU handles only 53% of each frame—the remaining time is CPU-bound by Tyranid AI, physics calculations, and cloth simulation for hundreds of simultaneous enemies [4]. Adjusting GPU-heavy settings like Shadows delivers minimal FPS improvement. The real gains come from Volumetrics, Cloth Simulation, and Effects—all primarily CPU-taxed. This guide prioritises those settings, then covers Patch 5.0’s DLSS 3 and FSR 3 Frame Generation. Not sure what these settings mean? Our PC graphics settings explained guide breaks them all down.
Space Marine 2 PC System Requirements
| Tier | CPU | GPU | RAM | Storage | Target |
|---|---|---|---|---|---|
| Minimum | Ryzen 5 2600X / i5-8600K | RX 580 / GTX 1060 (6 GB) | 8 GB | 75 GB SSD | 30 FPS @ 1080p Low |
| Recommended | Ryzen 7 5800X / i7-12700 | RX 6800 XT / RTX 3070 (8 GB) | 16 GB | 75 GB SSD | 60 FPS @ 1080p Ultra |
Windows 10/11 64-bit and DirectX 12 are mandatory. An SSD is required—not optional—because Space Marine 2’s texture streaming is storage-speed dependent. Installing on HDD causes stutters no in-game setting can fix [1].
Why SM2 Is CPU-Bottlenecked (And Why It Changes Your Settings Priority)
Most PC games at 1080p are GPU-limited: push settings higher and FPS drops because the GPU can’t keep up. Space Marine 2 inverts this. The game spawns hundreds of Tyranids simultaneously, each running collision detection, AI pathfinding, physics, and cloth animation. During a Carnifex assault wave, your GPU may have render headroom while your CPU is already saturated—frames stall waiting for CPU work, not GPU work [4].
The diagnostic is simple: if your GPU usage drops below 80% during horde combat while FPS also drops, you’re CPU-bottlenecked. Focus reductions on CPU-taxing settings before touching anything GPU-bound.
The three CPU-priority settings to reduce first:
- Cloth Simulation → Low — approximately 5% CPU frame time reduction; cloth physics on banners and capes is imperceptible in fast combat [4]
- Volumetrics → Low — approximately 5% CPU frame time reduction; atmospheric fog density that is largely invisible during intense sequences [4]
- Effects → Medium or Low — explosion and particle density during enemy death; most taxing when dozens of enemies die simultaneously
Best Space Marine 2 PC Settings: Full Breakdown
| Setting | Recommended | Impact Type | Notes |
|---|---|---|---|
| Display Mode | Borderless Windowed | None | Smoother Alt+Tab; avoids exclusive-fullscreen stutter during large horde spawns |
| Resolution | Native | Major | Use upscaling to scale down rather than lowering this directly |
| V-Sync | Off | Input lag | Cap FPS with RivaTuner or GPU driver instead; in-game V-Sync adds input latency |
| Motion Blur | Off | Minor | Reduces visual clarity in fast melee combat; no FPS benefit worth enabling it |
| Texture Resolution | Ultra | VRAM only | No FPS cost within VRAM limits; RX 580 / GTX 1060 users: use High to stay within 6 GB |
| Texture Filtering | Ultra | Negligible | Anisotropic filtering—always Ultra, near-zero FPS cost [3] |
| Shadows | Medium | Moderate (GPU) | Minimal visible difference from Ultra during fast third-person combat |
| Screen Space Reflections | Low | Moderate (GPU) | Visible on wet surfaces; Low is nearly identical to Default in practice [3] |
| Ambient Occlusion | Default | Low (GPU) | Adds depth to power armour surfaces; low cost and visible quality benefit [3] |
| Volumetrics | Low | Moderate (CPU) | ~5% CPU frame time saving; atmospheric fog and light shaft density [4] |
| Effects | Medium | Moderate (CPU) | Explosion particle density during combat; CPU-bound in large horde encounters |
| Details | Medium | Low–Moderate | Environment prop density; Ultra is rarely distinguishable during combat sequences |
| Cloth Simulation | Low | Low (CPU) | ~5% CPU saving; visually indistinguishable at Low during fast-paced play [4] |
Upscaling in 2026: DLSS 3 and FSR 3 Frame Generation
Patch 5.0 (December 2024) is the most impactful performance update Space Marine 2 has received. It added DLSS 3 Frame Generation for RTX 40-series GPUs and FSR 3.0 Frame Generation for all GPU vendors [2]. For a CPU-bottlenecked game, Frame Generation is especially effective: it synthesises additional frames without adding CPU workload, bypassing the bottleneck where conventional upscaling cannot.
At native 4K Ultra, an RTX 4090 averages 64 FPS. Enabling DLSS 3 Frame Generation with DLAA pushes that past 100 FPS [2]. On mid-range RTX 40-series cards at 1440p, Frame Gen turns a borderline-smooth 55–60 FPS into a consistent 90–100 FPS.
DLSS vs FSR image quality in this game: DLSS is noticeably sharper—FSR appears blurry even in Quality mode, with no in-game sharpening option to compensate [4]. NVIDIA users: use DLSS. AMD users: FSR Quality mode, or FSR 3 Frame Generation on RDNA 3+ hardware. Note that Space Marine 2 does not support Intel XeSS. For a full technology comparison, see our DLSS vs FSR vs XeSS guide.
Three Settings Profiles
These target stable frame times during horde combat, not just average FPS. SM2’s enemy spawning creates sudden CPU spikes, so headroom above your target matters more here than in most games. For the full system-level stack—BIOS, drivers, Windows settings—our PC FPS optimization guide covers everything.
Max FPS — Budget GPUs (RX 580 / GTX 1060)
| Setting | Value |
|---|---|
| Texture Resolution | Medium |
| Shadows | Low |
| Screen Space Reflections | Off |
| Volumetrics | Low |
| Effects | Low |
| Details | Low |
| Cloth Simulation | Low |
| Upscaling | FSR Quality |
Balanced — Mid-Range (RTX 3070 / RX 6800 XT, 1080p/1440p)
| Setting | Value |
|---|---|
| Texture Resolution | Ultra |
| Shadows | Medium |
| Screen Space Reflections | Low |
| Volumetrics | Low |
| Effects | Medium |
| Details | Medium |
| Cloth Simulation | Low |
| Upscaling | DLSS Quality / FSR Quality |
Max Quality — High-End (RTX 4070+ / RX 7800 XT+, 1440p/4K)
| Setting | Value |
|---|---|
| Texture Resolution | Ultra |
| Shadows | High |
| Screen Space Reflections | Default |
| Volumetrics | Medium |
| Effects | High |
| Details | High |
| Cloth Simulation | Medium |
| Upscaling | DLSS 3 FG + DLAA (RTX 40) / FSR 3 FG (RDNA 3) |
Windows and System Optimizations
- Resizable BAR (ReBAR) — Enable in BIOS if supported by your GPU and motherboard. Reduces micro-stutter in SM2’s texture-streaming environments [3]
- Hardware-Accelerated GPU Scheduling (HAGS) — Windows Settings → Display → Graphics. Reduces CPU overhead in GPU scheduling—a measurable benefit in CPU-bottlenecked scenarios [3]
- Windows Power Plan: High Performance — prevents CPU clock frequency fluctuation during demanding physics workloads [3]
- GPU Power Management Mode: Prefer Maximum Performance — NVIDIA Control Panel; prevents GPU downclocking during CPU-bottlenecked frame portions when GPU load temporarily drops
- Game Mode: On — reduces background process interruptions during peak horde combat
Troubleshooting: Low FPS and Textures Not Loading
| Problem | Likely Cause | Fix |
|---|---|---|
| FPS drops only during large hordes | CPU bottleneck during peak enemy spawn | Lower Cloth Sim, Effects, Volumetrics to Low; enable Frame Gen on RTX 40 or RDNA 3 |
| Stuttering on fast camera movement | Shader compilation on first run, or HDD streaming latency | Allow shaders to compile fully at first launch; move game to SSD [1] |
| Blurry textures not loading | Texture Resolution exceeds VRAM, or streaming incomplete | Drop Texture Resolution to High; confirm installation is on SSD [1] |
| GPU usage below 70% with low FPS | CPU bottleneck confirmed—GPU is waiting on CPU | Enable Frame Generation; reduce Cloth Sim, Volumetrics, Effects |
| Consistent low FPS everywhere | Below minimum specs or outdated GPU driver | Update GPU drivers; verify hardware meets minimum requirements [1] |
Frequently Asked Questions
Does Space Marine 2 have ray tracing?
No. Space Marine 2 launched without ray tracing and no RT features have been added in subsequent patches—performance issues are entirely unrelated to ray tracing [4].
Is Space Marine 2 more CPU or GPU demanding?
CPU demanding, unusually so for a third-person action game. Simultaneous physics, AI, and cloth simulation for hundreds of enemies overwhelms CPUs even at 1080p. Reduce Volumetrics, Effects, and Cloth Simulation before adjusting GPU-bound settings like Shadows.
Does Space Marine 2 support XeSS?
No. Only FSR 2/3 and DLSS 2/3 are supported following Patch 5.0. Intel Arc users should select FSR as their upscaling option.
What did Patch 5.0 add?
Patch 5.0 (December 2024) added DLSS 3 Frame Generation for RTX 40-series GPUs and FSR 3.0 Frame Generation for all compatible hardware, plus improved texture streaming speed and general stability [2].
Sources
- Saber Games. PC System Requirements—Warhammer 40,000: Space Marine 2. Saber Games Support
- DSoGaming. Space Marine 2 Patch 5.0: NVIDIA DLSS 3 & AMD FSR 3.0 Frame Generation. DSoGaming
- Game Rant. Best Warhammer 40,000: Space Marine 2 PC Graphics Settings. Game Rant
- PC Gamer. Warhammer 40,000: Space Marine 2 Performance Analysis. PC Gamer