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2025-12-19T05:34:10Z

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{{DISPLAYTITLE:Vsync and FPS limit setup}}

''This conversation was exported from ChatGPT''<ref>{{cite web|title=Vsync and FPS limit setup|url=https://chatgpt.com/share/69447db3-806c-8006-b23b-7b480ecc717e|publisher=ChatGPT|access-date=2025-12-19}}</ref>

== gpt-5-2 ==
=== User: Should we use Vsync on and limit fps slightly below refresh rate with freesync/vrr when using amd far frame generation? ===
Should we use Vsync on and limit fps slightly below refresh rate with freesync/vrr when using amd far frame generation?

=== Assistant: Short answer: yes — in most cases that’s the best setup, but with very specific settings when you use FreeSync/VRR + AM… ===
Short answer: yes — in most cases that’s the best setup, but with very specific settings when you use FreeSync/VRR + AMD FSR Frame Generation (AFMF / FSR 3 FG).

Here’s the clean, no-nonsense setup and why it works 👇

==== ✅ Recommended setup (AMD GPU + FreeSync/VRR + Frame Generation) ====

===== 1. Enable FreeSync / VRR =====
* In AMD Adrenalin → Display → FreeSync: ON
* In your monitor OSD → FreeSync / Adaptive Sync: ON

This is mandatory. Frame generation without VRR feels worse.

===== 2. VSync: ON (but only at the driver level) =====
* AMD Adrenalin → Graphics → Wait for Vertical Refresh → ON
* In-game VSync → OFF

👉 This prevents tearing only when you exceed the VRR range, without adding constant input lag like traditional in-game VSync.

===== 3. FPS limit slightly below refresh rate (VERY important) =====

Limit FPS to ~3–5 FPS below your monitor’s max refresh:

| Monitor | FPS cap |
| ------- | ------- |
| 144 Hz | 140–141 |
| 165 Hz | 160–162 |
| 240 Hz | 235–237 |

You can do this via:
* AMD Adrenalin → FRTC
* RTSS
* In-game limiter (if it’s stable)

⚠️ Do not rely on Frame Generation alone to cap FPS — it doesn’t behave like a real limiter.

==== 🎮 Why this combo works best with Frame Generation ====

===== Without FPS cap: =====
* You hit refresh ceiling
* VSync engages hard
* Input latency spikes
* FG frames feel uneven

===== With FPS cap below refresh: =====
* VRR stays active 100% of the time
* No VSync “hard lock”
* FG frames stay smooth
* Lower perceived latency

This is especially important with AMD FG, because:
* It already adds some latency
* It’s more sensitive to VRR disengaging than NVIDIA Reflex + DLSS FG

==== ❌ What NOT to do ====
* ❌ In-game VSync + Driver VSync → double latency
* ❌ No FPS cap → VRR breaks at ceiling
* ❌ VSync OFF everywhere → tearing with FG
* ❌ Chill instead of FPS cap → inconsistent pacing

==== 🧠 Extra tips (worth doing) ====
* Enable Anti-Lag / Anti-Lag+ (unless the game explicitly warns against it)
* Avoid running above native refresh even if FG “can”
* If the game supports it: Use in-game limiter > RTSS > FRTC (in that order)

==== Bottom line ====

Best practice with AMD Frame Generation:

✔ FreeSync ON
✔ Driver VSync ON
✔ In-game VSync OFF
✔ FPS cap 3–5 below refresh

That gives you the smoothest frame pacing, lowest latency possible, and zero tearing with AMD FG.

If you want, tell me:
* your monitor refresh rate
* the game(s) you play
* whether you’re using AFMF or FSR 3 FG

I can give you exact per-game settings 🔧

=== User: Can you show me the AMD source? ===
Can you show me the AMD source?

=== Assistant: I couldn’t find an official AMD support page that explicitly says “enable V-Sync + VRR + frame cap when using Radeon fr… ===
I couldn’t find an official AMD support page that explicitly says “enable V-Sync + VRR + frame cap when using Radeon frame generation” (similar to how NVIDIA documents Reflex + DLSS 3), but there *are pieces of official AMD documentation and authoritative sources that support the logic behind that recommendation. Here’s what we do have from AMD plus corroborating technical guidance:

===== ✅ 1. Official AMD on FSR / Frame Generation =====
* AMD’s FSR technologies page confirms that FSR Frame Generation is designed to generate intermediate frames as part of the presentation pipeline, and that it works in tandem with upscaling and latency-reduction technologies like Radeon Anti-Lag 2. It doesn’t give configuration advice, but it shows AMD’s intention for optimal use in games. GPUOpen<ref>{{cite web|title=GPUOpen|url=https://gpuopen.com/amd-fsr-framegeneration/|publisher=gpuopen.com|access-date=2025-12-19}}</ref>

===== ✅ 2. AMD FSR 3 Technical documentation =====
* The AMD FSR Frame Generation Swapchain manual notes how the VSync and variable refresh rate (VRR) interact with the frame generation swapchain — showing that the pacing logic takes both into account during presentation. GPUOpen<ref>{{cite web|title=GPUOpen|url=https://gpuopen.com/manuals/fsr_sdk/techniques/frame-interpolation-swap-chain/|publisher=gpuopen.com|access-date=2025-12-19}}</ref> This is important because it means the sync behavior isn’t ignored by the frame generation system.

===== 🔎 3. AMD’s indirect recommendations / best-practice hints =====

While AMD hasn’t published a unified “gaming setup guide” yet like NVIDIA Reflex with DLSS, these technical and implementation docs make it clear:
* The pacing logic of FSR Frame Generation considers expected refresh rate targets. GPUOpen<ref>{{cite web|title=GPUOpen|url=https://gpuopen.com/news/fsr3-in-games-technical-details/|publisher=gpuopen.com|access-date=2025-12-19}}</ref>
* Frame generation presumes input framerates above a threshold (e.g., ~60 FPS) to avoid interpolation artifacts. GPUOpen<ref>{{cite web|title=GPUOpen|url=https://gpuopen.com/manuals/fsr_sdk/techniques/frame-interpolation-swap-chain/|publisher=gpuopen.com|access-date=2025-12-19}}</ref>
* AMD does not disclaim VRR or VSync usage; rather, pacing systems interact with them depending on modes. GPUOpen<ref>{{cite web|title=GPUOpen|url=https://gpuopen.com/news/fsr3-in-games-technical-details/|publisher=gpuopen.com|access-date=2025-12-19}}</ref>

===== 🧠 Community + expert confirmation =====

Even though these are not official AMD marketing docs, they reflect what AMD engineers and experienced developers/testers have observed from AMD’s own technical releases:
* Enabling VSync with frame generation is widely suggested for correct pacing and to avoid tearing because VRR alone doesn’t cap above the refresh rate when FG drives effective outputs. Reddit<ref>{{cite web|title=Reddit|url=https://www.reddit.com/r/Amd/comments/16vbndk/amd_fsr_3_now_available/|publisher=reddit.com|access-date=2025-12-19}}</ref>
* Many guides recommend FPS limiting when using frame generation, since unbounded framerates can cause sync issues and tearing even with VRR. Medium<ref>{{cite web|title=Medium|url=https://medium.com/%40opinali/testing-fsr-3-0s-frame-generation-457ab4668979|publisher=medium.com|access-date=2025-12-19}}</ref>
* Frame pacing issues with FG/VSync/VRR being misaligned have been reported when VSync is disabled. NeoGAF<ref>{{cite web|title=NeoGAF|url=https://www.neogaf.com/threads/digital-foundry-amd-fsr3-hands-on-promising-image-quality-but-there-are-problems.1662072/|publisher=neogaf.com|access-date=2025-12-19}}</ref>

===== 📌 What’s missing from AMD docs but implied =====

AMD doesn’t yet publish one single authoritative “here’s how to configure GPU/driver/monitor for best experience with FSR Frame Generation + VRR” guidance like NVIDIA does with Reflex + DLSS.

However, the technical behavior of their frame pacing and swapchain code clearly relies on a stable presentation rhythm (which VRR + capped framerate + VSync provides). GPUOpen<ref>{{cite web|title=GPUOpen|url=https://gpuopen.com/manuals/fsr_sdk/techniques/frame-interpolation-swap-chain/|publisher=gpuopen.com|access-date=2025-12-19}}</ref>

==== 🧩 Summary of the AMD-linked evidence ====

| Claim | Supported by AMD sources? |
| --------------------------------------------- | ------------------------------------------------------ |
| Frame Generation works with VRR | Implied by pacing docs, not explicitly a guide |
| AMD FG benefits from syncing to refresh | Technical docs show pacing logic reacts to VSync/VRR |
| Limits / caps help performance/tear avoidance | Recommended by reviewers, confirmed by pacing behavior |
| AMD provides clear published settings guide | ❌ No official single page yet |

==== 📌 If you want the actual AMD links to read yourself ====

Here are the authoritative docs I used above:

🔗 AMD FSR technologies overview — AMD official (FSR including Frame Generation) AMD FSR Technologies page (official)
🔗 AMD FSR Frame Generation manual / swapchain — AMD GPUOpen official docs AMD FSR Frame Generation Swapchain docs (official)

If you want, I can pull direct quotes or screenshots from the specific AMD technical documentation about frame pacing and how VSync/VRR interacts with the frame generation swap chain.

== References ==
<references />

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