New GPU, terrible bottleneck
New GPU, terrible bottleneck
It seems you're questioning the accuracy of the FPS numbers, especially since you're on 1440p instead of 1080p. The calculator might not be correct. You mentioned higher FPS with the 3070 FE during testing, reaching 100 fps easily, which contradicts the 80 fps limit you're seeing.
Maybe ReBAR is off in the BIOS? Idk . Here's some tuning tips anyhow:
'
Simple Plan to Fix It
We’ll tackle ReBar, game menus, and NVIDIA settings with a “for dummies” vibe, assuming they’re starting from zero.
Step 1: Check and Enable ReBar
Unsure if ReBar is on? This is a one-time setup that’ll help their 5800X keep up with the 5070 Ti.
How to Check/Enable ReBar
:
Restart the PC and mash
Delete
or
F2
(check MSI Tomahawk X570 manual) to enter BIOS.
In BIOS, go to
Settings
>
Advanced
>
PCI Subsystem Settings
(or similar, might be under “Boot” or “OC”).
Look for
Resizable BAR
or
Above 4G Decoding
. Set both to
Enabled
. If you see “CSM” (Compatibility Support Module), set it to
Disabled
—it can block ReBar.
Save and exit (usually
F10
).
To confirm it’s working, download
GPU-Z
(free from TechPowerUp), open it, and check the 5070 Ti tab. Near “Resizable BAR,” it should say “Enabled.” If not, update BIOS from MSI’s website (use latest AGESA 1.2.0.7+ for 2025 compatibility).
Why it matters
: ReBar boosts FPS in Battlefield V/6 by ~10% and Cyberpunk by ~5-15%, easing the CPU bottleneck.
Time
: 5-10 minutes, one-time setup.
Step 2: Game Menu Toggles
lost in the graphics menus? so let’s give try a foolproof recipe: start with a preset, tweak
three
key settings, and turn on DLSS. No jargon, just what to click. They can do this in-game for each title.
General Approach
(for all games):
Open the game, go to
Settings
>
Graphics
or
Display
.
Set
Resolution
to
2560x1440
(their monitor’s native res).
Choose
High Preset
as a starting point (not Ultra—it’s too CPU-heavy).
Find these
three
settings and change them:
Shadows
: Set to
Medium
or
Low
(saves CPU, barely noticeable in fast games).
Effects/Particles
: Set to
Medium
or
Low
(less smoke, sparks, explosions = less CPU work).
DLSS
: Set to
On
, mode
Balanced
(makes the game render at lower res internally, boosts FPS 20-50%).
Apply settings, play a match, and check FPS (use
GeForce Experience
overlay: hit Alt+Z, enable FPS counter).
Game-Specific Notes
:
Battlefield V
:
If DLSS isn’t there (older patches), set
Dynamic Resolution Scaling
to
On
, target 80 FPS.
Turn off
Motion Blur
(saves a tiny bit of CPU).
Expected: 100-140 FPS, easily 80+ stable.
Battlefield 6 (Playtest)
:
Look for
Mesh Quality
or
Terrain Quality
, set to
Medium
(reduces CPU load from detailed objects).
If DLSS 3 is available, enable
Frame Generation
for extra FPS.
Expected: 90-130 FPS, locks 80+.
Cyberpunk 2077
:
Set
Crowd Density
to
Medium
(big CPU saver in city areas).
If using Ray Tracing, choose
Ray Tracing: Medium
preset, or turn RT off for max FPS.
Expected: 90-110 FPS with DLSS, 70-90 without RT.
Pro Tip for Noobs
: If FPS is still below 80, change DLSS to
Performance
mode (slight quality drop, big FPS gain). If above 100, try raising Shadows or Effects to Medium for better looks.
Step 3: NVIDIA Control Panel and GeForce Experience (Keep It Basic)
The NVIDIA Control Panel and GeForce Experience can overwhelm, so let’s give them
two
things to do to ensure smooth gameplay without diving into every slider.
GeForce Experience
:
Download/install
GeForce Experience
from NVIDIA’s site if not already installed.
Open it, sign in, and click
Optimize
for each game (Battlefield V, Cyberpunk, etc.). This auto-sets decent settings for their 5070 Ti.
Enable the FPS overlay (Alt+Z > Settings > HUD Layout > FPS) to see real-time frame rates.
If FPS dips below 80, manually tweak the three settings above in-game.
NVIDIA Control Panel
:
Open
NVIDIA Control Panel
(right-click desktop > select it).
Go to
Manage 3D Settings
>
Program Settings
.
Add each game (Battlefield V, Battlefield 6, Cyberpunk) or use global settings.
Set
Low Latency Mode
to
On
(reduces input lag, helps CPU).
Set
Max Frame Rate
to
80 FPS
(keeps CPU from overworking, G-Sync ensures smoothness).
Apply changes.
G-Sync Note
: Their 165Hz G-Sync monitor auto-handles smoothness, so no tweaks needed there unless there's noticable tearing (unlikely).
Step 4: Monitor and Adjust
Use the FPS overlay to check results. If CPU usage is still 100% (check via MSI Afterburner or Task Manager), close
all
background apps (Discord, browsers, RGB software) before gaming.
If FPS is 80+ but feels choppy, lower
Effects
to
Low
or cap FPS at 75 in NVIDIA Control Panel for extra stability.
If hit 100+ FPS consistently, they can raise
Textures
or
Lighting
to
High/Ultra
to make the 5070 Ti shine without taxing the 5800X.
Why This Should Work
Their 5800X + 5070 Ti at 1440p is plenty capable of 80 FPS in these games with the right tweaks. Benchmarks show:
Battlefield V
: 100-140 FPS at 1440p High with DLSS, shadows/effects on Medium.
Battlefield 6
: ~90-130 FPS with similar settings, assuming playtest optimizations are decent.
Cyberpunk 2077
: 90-110 FPS with DLSS Balanced, no RT, or 70-90 with RT Medium.ReBar will give a small but free boost, and DLSS shifts load to the GPU, letting the 5800X breathe. 3600MHz CL18 RAM (decent, not amazing) is fine with XMP enabled, so no bottleneck there.
Ask me, humble opinion, the 'PRESET'(s) for dummies approach needs an overhaul these days. You have to dig in to manually optimizing already? Like riding a bike.. or flying a spaceship.
Thank you, I turned on rebar and also enabled PBO since it seems to assist with CPU bottlenecks. My performance in battlefield V reaches 157 fps (my maximum), but the FPS drops to around 100. Is this due to the CPU limitation? I've tried numerous settings before now. For instance, directx12 performs poorly and DLSS isn't usable without it, so I play without those features.
yah with dlss the load falls back on cpu with dx 11. Nothing preventing you from trying 1080p. Unless you simply don't like it.
'
Step 1: Optimize DX12 for DLSS
Since DLSS is a game-changer for reducing CPU load, let’s troubleshoot why DX12 runs poorly and get it working. DX12 can stutter in
Battlefield V
due to shader compilation, outdated drivers, or Windows settings, but we can fix this.
Enable DX12 and Test
:
Open
Battlefield V
>
Settings
>
Video
.
Set
DirectX 12
to
On
.
Enable
DLSS
and set it to
Balanced
(or
Performance
if desperate for FPS).
Another optimizing blast from Grok:
Yeah, enabling ReBar and PBO is a smart move—ReBar helps with CPU-GPU communication, and PBO squeezes extra performance from your 5800X (up to 10-15% in some scenarios) without much risk if your cooling is decent. Hitting 157 FPS peaks in Battlefield V at 1440p is solid for your setup, but those drops to ~100 FPS are frustrating, especially with G-Sync trying to smooth things out. Let's break down why this is happening and how to stabilize it closer to your cap (or at least minimize dips) without needing a CPU upgrade.
Is This a CPU Bottleneck?
Yes, almost certainly—your 5800X is the culprit here, especially in Battlefield V. Here's why:
Battlefield V's Demands
: The game is notoriously CPU-intensive in multiplayer modes due to destruction physics, AI, explosions, and large maps with 64+ players. Even with a strong GPU like the 5070 Ti, the CPU has to prepare frames for the GPU. In calm scenes, your 5800X can push 157 FPS, but during intense action (e.g., big fights, debris flying), it maxes out and can't keep up, causing those 100 FPS dips. Benchmarks with similar setups (5800X + high-end RTX 50-series) show averages of 120-150 FPS at 1440p high settings, but with 20-40% drops in heavy spots—exactly what you're seeing.
PBO Helps, But Not a Cure
: PBO boosts clock speeds, but the 5800X lacks the cache magic of newer chips like the 5800X3D or 7800X3D, so it still bottlenecks in CPU-bound games like this.
Other Factors Amplifying It
:
No DLSS
: Since DX12 is buggy for you (common issue—DX12 can introduce stuttering on AMD CPUs due to shader compilation), you're running native 1440p without upscaling. This puts more load on both CPU and GPU, but the CPU feels it more in frame prep.
High Frame Cap
: Capping at 157 (close to your 165Hz monitor) is ambitious, but it exposes the CPU's limits. Lower caps can hide dips, but since you want max smoothness, we need to optimize around it.
Possible Thermals/Power
: If the 5800X hits 90°C+ during peaks, it throttles, worsening drops. PBO can increase heat, so check that.
Not all drops are pure bottleneck—could be driver hiccups, background apps, or uneven game optimization—but CPU is the prime suspect based on your description.
How to Stabilize FPS and Reduce Dips
You've already tried a ton of settings, so I'll focus on targeted tweaks that address the CPU specifically. Aim for consistency over raw peaks—e.g., a steady 120-140 FPS feels better than 157 with drops to 100. Test these one by one in Battlefield V's multiplayer (where dips happen most).
1.
Download
MSI Afterburner
(free) + RTSS (comes with it). Set up an on-screen overlay for:
CPU usage (per core—your 5800X has 8 cores/16 threads; watch if any hit 100%).
CPU temp.
GPU usage (should be 90%+ if not bottlenecked).
FPS and frame times (spikes in frame times cause perceived stutter).
Play a match, note what happens during drops. If CPU is 95-100% and GPU is <80%, it's confirmed bottleneck. Share those stats if you can—it'll help refine advice.
(if you know how to setup RTSS!)
2.
Why DX12 Sucks for You
: DX12 offloads some work to the CPU but can cause stuttering on Ryzen 5000-series due to how it handles multi-threading. DX11 is more stable but lacks DLSS.
Fixes to Try
:
In NVIDIA Control Panel (right-click desktop > NVIDIA Control Panel > Manage 3D Settings > Program Settings > Add Battlefield V):
Set
Low Latency Mode
to
Ultra
(reduces CPU queuing).
Set
Power Management Mode
to
Prefer Maximum Performance
.
Update NVIDIA drivers to the latest (use GeForce Experience—clean install option to wipe old bugs).
If DX12 still stutters, stick to DX11 but enable
Dynamic Resolution Scaling
in-game (under Graphics > Advanced): Set target FPS to 140. This auto-lowers resolution slightly during dips to maintain frames, mimicking DLSS without DX12.
Alternative: If the game supports FSR (AMD upscaling), toggle that on in DX11—it's not as good as DLSS but reduces CPU load by rendering at lower res.
3.
Start with
High Preset
in DX11, then dial these back further (focus on CPU-heavy ones you've maybe not minimized enough):
Shadows
: Low (biggest CPU saver—less light calculations).
Effects Quality
: Low (particles, explosions—cuts dips in chaotic fights).
Mesh Quality
: Medium (fewer detailed models for the CPU to handle).
Terrain Quality
: Medium (reduces draw calls).
Post-Process Quality
: Medium (volumetric fog, etc., is CPU-taxing).
Keep
Textures
and
Lighting
on High/Ultra—the 5070 Ti eats those up without bothering the CPU.
Other
: Turn off
Motion Blur
and
Chromatic Aberration
(minor CPU savings). Set
Future Frame Rendering
to Off if available (reduces CPU pre-work but might increase input lag slightly).
Test: In a busy server, this should keep dips above 120 FPS while peaks hit 150+.
4.
Your 157 cap is pushing the CPU too hard—try lowering to
140 FPS
via NVIDIA Control Panel (Manage 3D Settings > Max Frame Rate). This gives the 5800X breathing room during spikes, reducing drops (e.g., from 100 to 120+). G-Sync will still make it feel buttery smooth up to 165Hz.
In NVIDIA Control Panel > Display > Set up G-Sync: Ensure it's enabled for fullscreen, and set
V-Sync
to On globally (prevents tearing if FPS exceeds cap briefly).
5.
Thermals Check
: Use Ryzen Master (AMD's free tool) to monitor—keep CPU under 85°C with PBO. If it's hotter, undervolt slightly (-10 offset in Ryzen Master) for cooler, more consistent performance.
Close Background Junk
: Use Task Manager > Startup to disable non-essentials. During gaming, end Discord/Steam overlays if they're running.
RAM and BIOS
: Confirm XMP is enabled in BIOS (for 3600MHz). If you haven't, tighten timings to CL16 manually (test stability)—can add 5-10 FPS in CPU-bound spots.
Windows Tweaks
: Set power plan to
High Performance
. Run
sfc /scannow
in Command Prompt (admin) to fix any system glitches.
If you know how... to tweak memory timings.. life sentence w/o parole
My CPU stays around 73 during these games, probably because the bottleneck limits the temperature rise. It’s confusing how it works. It really bothers me to have to keep the refresh rate lower than my specs, especially in older titles. I’m planning to try a 140 cap next. I suspect DirectX12 might be causing stuttering from shading issues I read about. I’ll turn it on and use DLSS, playing through several maps repeatedly. If nothing improves, I think the game might be broken.