Revelations Update 4 Hotfix 2 shipped for Doom: The Dark Ages on August 26, 2026, and it changed the performance landscape. The hotfix addressed shader compilation stutters and adjusted dynamic resolution scaling, but it also reset everyone's custom configs. If you're seeing hitches or lower frame rates than before the patch, the culprit is likely default settings that don't match your GPU.
This guide covers the highest-impact settings changes for Revelations Update 4 Hotfix 2, grounded in measured benchmarks from DSO Gaming and TechSpot. You'll see exactly which toggles to adjust for your hardware — no guesswork, no marketing fluff. If you want a full hardware-specific playbook that auto-updates when future patches drop, run a free optimization at /optimize.
What Changed in Revelations Update 4 Hotfix 2
The August 26 hotfix targeted three areas: shader compilation (pre-compiles more on launch to reduce in-game stutters), dynamic resolution scaling behavior (now holds target resolution longer before dropping), and a texture streaming bug that caused pop-in on GPUs with 8GB VRAM or less. Performance-wise, the shader fix helped frame-time consistency across the board. The dynamic-res tweak means Ultra-quality users on mid-range cards may see slightly lower average FPS than pre-patch, because the system isn't dropping resolution as aggressively to maintain 60.
The VRAM fix is the big one for 8GB cards — texture streaming now respects the pool limit better, which eliminates most of the catastrophic stutter but doesn't change the fact that Ultra textures still exceed 8GB at 1080p. You'll need to drop texture quality or resolution if you're on an RTX 3070, RX 6600 XT, or similar.
Config reset behavior
Highest-Impact Settings Post-Hotfix
These are the toggles that move frame rate the most without destroying visual fidelity. We're focusing on the settings that changed behavior or default state after Hotfix 2, plus the evergreen heavy hitters that apply to any patch.
Resolution Scale and Dynamic Resolution
Dynamic Resolution is now more conservative post-hotfix — it waits longer before scaling down. If you're targeting 60 FPS on a card that can't quite hold it (like an RX 6600 at 1080p medium, which measured 41 FPS avg per TechSpot), the system will spend more time at full resolution and dip below 60 rather than preemptively dropping to 90% scale. The result is lower average FPS in some scenarios.
Fix: Turn Dynamic Resolution OFF and set a static Resolution Scale of 90% or 85%. A 10% scale drop is visually negligible but frees 15–20% GPU load. On the RX 6600, dropping from 100% to 90% scale at 1080p medium typically pushes that 41 FPS baseline into the mid-50s, a far smoother experience than the dynamic system's erratic dips.
Texture Quality
Ultra textures demand over 10GB VRAM at 1080p and 12GB+ at 1440p. Post-hotfix, the streaming system is less likely to cause hard stutters on 8GB cards, but you'll still see texture pop-in and occasional frame-time spikes if you stay on Ultra. High textures use roughly 7GB at 1080p and look nearly identical in motion — the difference is mip-map detail you only notice in photo-mode close-ups.
For 8GB GPUs (RTX 3070, RX 6600 XT, Arc B580): set Texture Quality to High. For 10–12GB cards (RTX 3080, RX 7600, RTX 4060), Ultra is safe at 1080p; drop to High at 1440p. For 16GB+ cards, Ultra everywhere.
8GB VRAM is genuinely limiting
Shadow Quality and Ray-Traced Shadows
Ray-Traced Shadows (RT Shadows) is the single most expensive toggle in Doom: TDA. On an RTX 4090 at 1440p medium, measured by TechSpot at 130 FPS, enabling RT Shadows typically cuts that to around 85–95 FPS (a 25–35% hit). On older RTX cards without third-gen RT cores, the penalty is even steeper.
Standard Shadow Quality (non-RT) scales more reasonably: Ultra to High saves 8–12% GPU load, High to Medium saves another 10–15%. The visual difference between High and Ultra shadows is shadow-map resolution in distant geometry — you won't notice it unless you're actively looking. Medium shadows start to show obvious blocky edges in close-quarters indoor fights.
Recommendation: RT Shadows OFF for any card slower than an RTX 4070. Shadow Quality on High. If you're chasing 120+ FPS on a mid-range card, Medium shadows are acceptable.
Ambient Occlusion and Reflections
Screen-Space Ambient Occlusion (SSAO) costs 3–5% GPU time. The upgraded HBAO+ option (if enabled in advanced settings) costs 6–8%. Reflections on Ultra (screen-space + cube-map blending) cost another 5–7%. Both settings add depth to lighting but are invisible during fast movement — and Doom: TDA is almost always fast movement.
Set Ambient Occlusion to SSAO (not HBAO+) or OFF. Set Reflections to Medium (screen-space only, no cube-map blend). Combined, that's a 10–15% FPS gain with almost no perceptible loss in a firefight.
GPU-Specific Recommendations
Below are baseline configs for common GPUs, using the measured data from DSO Gaming and TechSpot. These are starting points — your exact CPU, RAM speed, and driver version will shift results by a few percent either way.
RX 6600 / RTX 3050 / Arc B580 (Entry 1080p)
The RX 6600 measured 41 FPS avg at 1080p medium (TechSpot). The Arc B580 hit 62 FPS at the same settings, and the RX 6750 XT landed at 62 FPS. These cards need every optimization to hold 60.
- Resolution Scale: 90% (not dynamic)
- Texture Quality: High (8GB VRAM limit)
- Shadow Quality: Medium (High if you have headroom)
- RT Shadows: OFF
- Ambient Occlusion: OFF
- Reflections: Low
- Anti-Aliasing: TAA (not SMAA — TAA is faster in id Tech 8)
- Motion Blur: OFF (personal preference, saves 1–2%)
Expected outcome: RX 6600 should push into the low-to-mid 50s FPS. Arc B580 and RX 6750 XT should comfortably clear 70 FPS.
RTX 3080 / RX 6900 XT (Mainstream 1080p/1440p)
The RTX 3080 measured 65 FPS avg at 1080p ultra (DSO Gaming), and the RX 6900 XT hit 78 FPS at the same preset. These GPUs can handle higher settings but need RT disabled to stay smooth.
- Resolution: Native 1080p or 1440p (no scale needed)
- Texture Quality: Ultra at 1080p, High at 1440p (10GB VRAM on 3080)
- Shadow Quality: High
- RT Shadows: OFF (20–30% hit on 3080, not worth it)
- Ambient Occlusion: SSAO
- Reflections: High
- Anti-Aliasing: TAA
Expected outcome: RTX 3080 should hit 90+ FPS at 1080p, 70+ at 1440p. RX 6900 XT slightly higher due to stronger raster performance in id Tech.
RX 7900 XTX / RTX 4080 (High-End 1440p/4K)
The RX 7900 XTX measured 95 FPS avg at 1080p ultra (DSO Gaming). At 1440p or 4K, you have overhead for RT but need to pick battles.
- Resolution: Native (1440p or 4K)
- Texture Quality: Ultra
- Shadow Quality: Ultra (or High if RT enabled)
- RT Shadows: Optional (test — 25–30% cost)
- Ambient Occlusion: SSAO or HBAO+
- Reflections: Ultra
- Anti-Aliasing: TAA
If you enable RT Shadows at 1440p, drop Shadow Quality to High to reclaim some headroom. At 4K, consider Medium shadows with RT ON, or High shadows with RT OFF.
FSR 4 / DLSS 4 upscaling
Console Commands and Advanced Tweaks
Doom: TDA uses id Tech 8, which exposes deep cvars via the console (tilde key). These are the post-hotfix commands that impact performance without breaking visual parity.
- r_maxFps <value> — Cap frame rate. Uncapped can cause frame-time variance; cap at your monitor refresh +10 for smoother pacing.
- r_preloadShaders 1 — Force full shader pre-compilation on launch. Adds 30–60 seconds to startup but eliminates nearly all in-game stutter.
- r_shadows 1 / 2 / 3 — Override shadow quality (1=Low, 2=Medium, 3=High). Useful for testing without menu restarts.
- r_softParticles 0 — Disable soft-edge particles. Saves 2–3% GPU on heavy combat, minimal visual loss.
- r_useThreadedRenderer 1 — Enable multi-threaded rendering submission. Default ON post-hotfix, but verify in console.
To create a persistent config, open your Doom: TDA install folder, navigate to base/, and create a file named autoexec.cfg. Paste the commands above (one per line, no prefixes). The game will execute them on every launch.
Shader pre-load trade-off
CPU Bottleneck Check Post-Hotfix
Hotfix 2's shader fix reduced CPU overhead in some scenarios, but Doom: TDA is still a CPU-heavy title at high frame rates. If you're targeting 120+ FPS and settings changes aren't moving the needle, check per-core CPU usage (Task Manager → Performance → CPU → right-click → Change graph to Logical processors). Look for one or two cores pinned near 100% while the rest idle — that's a CPU bottleneck, and lowering GPU settings won't help.
The engine leans hard on single-thread performance. A Ryzen 7 9800X3D or Core Ultra 9 285K will push significantly higher FPS than older 8-core chips at the same clock, thanks to better IPC and cache. If you're on a Ryzen 5000 or Intel 10th/11th-gen CPU and stuck at 90–100 FPS no matter the GPU settings, the CPU is the limit.
Revelations Update 4 Hotfix 2 fixed the worst of the shader stutter and VRAM streaming issues, but it didn't change the fundamental performance hierarchy — texture quality, RT shadows, and resolution scale are still the big three levers. The settings above are baselines for common GPUs; your exact system will vary by 5–10% depending on RAM speed, driver version, and background load. If you want a config that auto-updates when the next hotfix or driver drops, generate a free hardware-specific playbook at /optimize. It takes 60 seconds and builds settings for your exact GPU, CPU, and target frame rate.