The AMD RX 9070 XT is one of the best-value GPUs of 2026 — strong rasterization
performance, 16GB of GDDR6 VRAM, and a price point that makes NVIDIA’s mid-range lineup
look shaky. But there’s one feature that turns this already-capable card into a genuine 4K
powerhouse: AMD FSR 4.

With FSR 4 enabled, the RX 9070 XT can push smooth 60–200+ FPS at 4K in today’s biggest
titles — performance that would otherwise demand spending significantly more on a higher-end
card. For Nigerian gamers stretching every naira, FSR 4 isn’t just a nice-to-have. It’s the
difference between a frustrating sub-60 experience and genuinely immersive 4K gaming.

In this guide, we walk through exactly how to enable FSR 4 on your RX 9070 XT — three
different methods for different games and situations — along with the best settings, real
benchmark numbers, and an honest FSR 4 vs DLSS 4 comparison.

Still deciding between AMD and NVIDIA? Read our breakdown: AMD vs NVIDIA Graphics Cards – Which One Should I Buy?

Understanding AMD FSR 4 on RDNA 4 Cards

What’s New in FSR 4 in 2026

FSR 4 — officially called FSR Redstone — is not a numerical update. It’s a fundamentally
different technology from FSR 3. Where older versions used algorithmic spatial and temporal
techniques, FSR 4 is powered by machine learning running on RDNA 4’s dedicated AI accelerators. The result is noticeably sharper upscaling, dramatically better anti-ghosting on
fast-moving objects, cleaner fine detail like hair and foliage, and AI-powered Frame Generation
that inserts brand-new frames rather than duplicating existing ones.

According to Tweaktown’s full FSR Redstone deep dive, FSR Redstone launched in December 2025 with support across 200+ titles, and the full suite includes four components:

1. FSR Upscaling (ML) — AI-based upscaling from lower resolutions to 1440p or 4K
2. FSR Frame Generation (ML) — AI-powered frame insertion to double visible frame rates
3. FSR Ray Regeneration (ML) — AMD’s answer to DLSS Ray Reconstruction; AI-denoises ray-traced frames
4. FSR Radiance Caching — Accelerates ray tracing calculations using a neural radiance cache

As of early 2026, FSR Upscaling (ML) has the widest game support. Frame Generation and Ray
Regeneration support continues expanding with each driver update.

Why FSR 4 Is Perfect for 4K on the RX 9070 XT

The RX 9070 XT was built for 4K and 1440p gaming, but native 4K in demanding ray-traced
titles can still stress the card. FSR 4 changes the equation completely.

The card’s 16GB GDDR6 VRAM is a critical enabler — 4K textures and frame buffers eat
memory aggressively, and the RX 9070 XT carries 4GB more than NVIDIA’s RTX 5070. That
headroom means FSR 4’s AI models run without memory pressure, maintaining image quality in
ultra-preset scenarios where 12GB cards stutter. As Tom’s Hardware’s GPU hierarchy notes, the RX
9070 XT is currently the best-value card capable of delivering 60+ FPS average at 4K across a
broad game test suite.

In practice, FSR 4 Quality mode renders your game at roughly 1440p and upscales to 4K —
giving frame rates 40–70% higher than native 4K, often with image quality that rivals native
rendering thanks to ML-based sharpening.

System Requirements and Preparation

Before enabling FSR 4, confirm your system is ready:

• GPU: RX 9070 XT (FSR 4 ML features are RDNA 4 exclusive)
• Drivers: AMD Adrenalin 25.3.1 or later — download from AMD’s official driver support page
• OS: Windows 11 22H2 or later (Windows 10 has limited FSR 4 Frame Generation support)
• Game support: Check native FSR 4 support in-game, or use AMD’s driver override for FSR 3 titles (covered in Method 2 below)
• PSU: A stable, quality power supply is essential — FSR 4 with Frame Generation spikes GPU power draw during rendering phases. If your current unit is borderline, see our Best 750W PSUs for the RX 9070 XT in Nigeria (2026 Guide) for properly rated options

Quick driver update steps:

1. Open AMD Adrenalin software
2. Click the gear icon → System
3. Select “Check for Updates”
4. Install the latest recommended driver and restart

Step-by-Step Guide to Enable FSR 4

Method 1: Native In-Game FSR 4 (Easiest)

This works in any game with native FSR 4 / FSR Redstone support — titles like F1 25, Arc
Raiders, Battlefield 6, Indiana Jones and the Great Circle, Kingdom Come: Deliverance 2, and
200+ others.

1. Update AMD Adrenalin drivers to the latest version (link above)
2. Launch your game and go to Settings → Graphics / Display
3. Find the Upscaling or Anti-Aliasing dropdown — select FSR 4 (may appear as “FSR Redstone” or “AMD FSR ML”)
4. Choose your Quality Mode:
   • Quality — best image clarity, ~1440p→4K upscale, 40–60% FPS boost
   • Balanced — good middle ground for demanding scenes, ~55% FPS boost
   • Performance — for heavy ray tracing or competitive play where max frames matter
5. Enable Frame Generation if available in-game (usually labeled “FSR Frame Generation” or “AMD FG”)
6. Apply and play — no restart required

Recommended starting point: FSR 4 Quality + Frame Generation On for most single-player
4K gaming.

Method 2: AMD Adrenalin Global Settings Override

Many games that shipped with FSR 3 support can be upgraded to FSR 4 through AMD’s
Adrenalin driver — no game patch required. As NoobFeed confirms in their FSR 4 4K review, AMD’s
driver-level override lets you force FSR 4 upscaling on FSR 3 titles without waiting for a
developer update.

1. Open AMD Adrenalin (right-click desktop → AMD Software: Adrenalin Edition)
2. Click the Gaming tab at the top
3. Find your game in the list or click Add a Game to add it manually
4. Select the game and open its individual settings panel
5. Under Graphics, locate AMD FidelityFX Super Resolution
6. Toggle the override On and set the mode to FSR 4 (or “ML Upscaling” depending on your driver version)
7. Set Sharpness to 80–90% for a clean, detailed image
8. Under Frame Generation, toggle AMD Fluid Motion Frames (AFMF 2) to On for compatible DX12 titles
9. Click Apply — changes take effect the next time you launch the game

Important note: Global override upscaling can occasionally conflict with a game’s built-in
TAA. If you see doubled edges or artifacts, disable in-game anti-aliasing and let FSR 4 handle it
entirely.

Method 3: OptiScaler for Older Games

For DX11 or older titles that predate FSR 3 support entirely, OptiScaler (free, open source) lets you inject FSR 4 upscaling externally. It intercepts the rendering pipeline and applies FSR 4 before the frame is sent to your display.

⚠️ Safety warning: OptiScaler’s only legitimate download sources are its official GitHub page and the team’s Discord server. The OptiScaler
team themselves warn there are fake websites impersonating the project. Do not download from
any other source, and remember OptiScaler is completely free — any site charging for it is a
scam.

1. Download the latest stable release from the OptiScaler GitHub releases page
2. Place the DLL file in your game’s executable folder — check the OptiScaler FSR4 Compatibility Wiki for your specific game’s instructions and known issues
3. Launch the game and press Insert to open the OptiScaler overlay
4. Select FSR 4 as the upscaler in the overlay menu
5. Set resolution scale to 67% for an effective Quality-mode equivalent at 4K

Lossless Scaling (available on Steam for ~$7 USD) is another option that adds frame generation to virtually any game via a simple overlay — useful when you just want more frames without per-game config files.

Best FSR 4 Settings for an Excellent 4K Experience

The right FSR 4 mode depends on what you’re playing:

Single-player action / RPG (Spider-Man 2, God of War: Ragnarök, Indiana Jones):
Use FSR 4 Quality + Frame Generation On. Image quality is excellent and the FPS boost
makes the experience genuinely fluid at 4K. PCGamesN’s RX 9070 XT review found Indiana Jones
averaging 157 FPS at 4K with FSR 4 Quality + Frame Generation — 29 FPS ahead of the RTX
5080.

Competitive / fast-paced multiplayer (Battlefield 6, Apex Legends at 4K):
Use FSR 4 Balanced or Performance for maximum frame rate headroom. Per NoobFeed’s
4K FSR benchmark data, FSR 4 Quality in Battlefield 6 at 4K delivers over 100 FPS — Performance mode
pushes even higher, giving you a competitive edge.

Heavy ray tracing (Cyberpunk 2077 RT Ultra, Alan Wake 2, Call of Duty: Black Ops 7):
Use FSR 4 Balanced or Performance + Frame Generation + Ray Regeneration (ML) if the
game supports it. This combination keeps 4K playable even with demanding RT settings
enabled.

Combine FSR 4 with these Radeon features for maximum benefit:

• HYPR-RX (one-click in Adrenalin) — bundles upscaling, Frame Generation, and Anti-Lag 2 together automatically
• Anti-Lag 2 — reduces input latency introduced by Frame Generation; essential for multiplayer
• Radeon Boost — dynamically lowers resolution in fast-motion scenes to recover frames during intense sequences

Performance Results – RX 9070 XT + FSR 4 at 4K

Here’s how the RX 9070 XT performs at 4K across popular 2026 titles with FSR 4 enabled.
Data sourced from PCGamesN, Tom’s Hardware, NoobFeed’s FSR 4 4K review, and NoobFeed’s FSR 4 vs DLSS 4 upscaling benchmark:

The headline result: with FSR 4 Quality + Frame Generation, the RX 9070 XT outpaces the
RTX 5080 in F1 25 at 4K — averaging 202 FPS against the 5080’s lower total. That’s a
remarkable outcome for a sub-$700 GPU.

A detailed Medium review of the 9070 XT and FSR 4 found FSR 4 Quality delivered excellent clarity and near-zero ghosting in Horizon Zero Dawn Remastered at 4K — a title that would have exposed FSR 2’s weaknesses heavily.

FSR 4 vs DLSS 4: Honest Comparison in 2026

The honest picture: FSR 4 is a significant step up from FSR 3.1 and works well at high frame
rates in Quality or Balanced modes. DLSS 4 still has a meaningful edge in day-one support for
new releases and in fine-detail scenarios involving small distant objects. However, as
NoobFeed’s cross-GPU upscaling comparison shows, the RX 9070 XT with FSR 4 Quality beats the
RTX 5070 with DLSS 4 Quality by up to 35% at 4K in several major titles. The gap has
narrowed significantly.

For a full GPU matchup including upscaling, pricing, and Nigerian market value: AMD RX 9070 XT: What’s the Nvidia Equivalent in 2026?

Common Problems and Fixes

FSR 4 option not showing in-game
The game likely only supports FSR 3 natively. Use the Adrenalin global override (Method 2 above) to force FSR 4 through the driver.

Ghosting or blurry edges with FSR 4
Disable in-game TAA or other temporal AA settings — running two temporal solutions simultaneously causes visual artifacts. Let FSR 4 handle all anti-aliasing on its own.

Frame Generation causing input lag in multiplayer
Enable Anti-Lag 2 in AMD Adrenalin settings. It’s specifically designed to counteract the latency introduced by frame interpolation.

Game crashing when Frame Generation is enabled
This is often a power delivery issue. Frame Generation spikes GPU power draw during rendering phases — a borderline PSU can trip its over-power protection (OPP) circuit and shut down the system. See our Best 750W PSUs for the RX 9070 XT in Nigeria (2026 Guide) for units built to handle these transient spikes cleanly.

FSR 4 looks worse than FSR 3 in a specific game
Try reducing Sharpness in the Adrenalin override to 70–80% rather than 90%+. Also check whether Frame Generation is conflicting with the game’s own built-in motion interpolation system.

AFMF 2 not available in the override panel
Confirm you’re on Adrenalin 25.3.1 or later, and that the game runs in DirectX 12 or Vulkan — DX11 titles have limited AFMF 2 support. For older DX11 games, use OptiScaler’s DX12 interop method instead (see the OptiScaler FSR4 Compatibility List for confirmed working titles).

Should You Buy the RX 9070 XT for 4K Gaming?

If your primary target is 4K gaming without RTX 5080 prices, the RX 9070 XT with FSR 4 makes a compelling case. Per Tom’s Hardware’s GPU hierarchy, it’s currently the best-value card capable of consistent 60+ FPS average at 4K — with the RTX 5070 Ti delivering comparable native performance at a meaningfully higher cost.

The 16GB VRAM advantage matters most at 4K — complex RT scenes and high-resolution texture packs push memory in ways that 12GB cards increasingly struggle with. AMD’s official benchmark data via Tweaktown shows the RX 9070 XT at 42% faster than the RX 7900 GRE for 4K gaming, with the biggest gains in ray-traced workloads.

FSR 4 is the multiplier that ties it all together. Games that would otherwise demand a $1,000+ card at 4K Ultra become genuinely smooth experiences.

Who should buy it:

• Gamers targeting 4K 60+ FPS in single-player titles — absolutely yes
• Competitive players who want 4K 120+ FPS — yes, especially with Frame Generation enabled
• Builders who push heavy RT in every title — yes with FSR 4, but manage expectations on fully path-traced games

Who should consider alternatives:

• Builders on a strict budget — see RTX 5060 vs RTX 3070 in 2026 for a budget-focused comparison
• Buyers still choosing between AMD and NVIDIA as a platform — AMD vs NVIDIA – Which Brand Should You Choose? covers the full picture

Conclusion

FSR 4 genuinely changes what the RX 9070 XT can do at 4K. Games that struggled at 45 FPS native can hit 90–120 FPS with Quality mode and Frame Generation enabled — a transformation in experience, not just a spec improvement. The steps to unlock it are straightforward: update your drivers, enable it in-game or through Adrenalin, and tune the mode to your game type.

Game support continues expanding with every monthly driver update, and Frame Generation quality improves steadily. In 2026, FSR 4 is already good enough to make the RX 9070 XT one of the most capable 4K gaming GPUs you can buy without breaking the bank.

Try it today, adjust the settings, and share your FPS results in the comments — we’d love to hear how it’s performing in your specific game library.