Free is real
43 working tweaks, benchmark, Share My Score, and Restore Center—with no time limit.
Straight answers
Questions before you tweak?
Free vs PRO, benchmarking, SmartScreen, Restore Center, activation, and safer usage—answered without fake performance or safety promises.
Four useful answers first
Proof, control, and clear limits.
Measure first
The benchmark includes variance instead of turning every small movement into a win.
Restore supported changes
Restore Center provides individual controls, while rare one-way actions are labeled.
SmartScreen in context
A signing/reputation notice is not an antivirus result or a safety guarantee.
Product basics
Start with what it is.
Platform, audience, and the performance claims YUKFUE does—and does not—make.
What is YUKFUE’s Optimization Utility?
A Windows PC-optimization and gaming utility built around visible tweaks, before-and-after measurement, and restoration controls for supported changes.
Does it support Windows 10 and Windows 11?
Yes. The documented platform is 64-bit Windows 10 or Windows 11.
Is it only for gamers?
It is designed for competitive and serious PC gamers, but many of its changes affect Windows system-wide. Review each change and decide whether the workflow fits your PC.
Does it guarantee more FPS?
No. Results vary by system, and YUKFUE cannot add performance your hardware does not have. Use the built-in benchmark to measure your own before-and-after result instead of trusting a fixed FPS promise.
Free vs PRO
A real free tier. A clear upgrade.
The counts and price are the documented split, not inflated feature totals.
What is included in Free?
Free includes 43 working tweaks across every category, the full System Benchmark, Share My Score, Restore Center, restore-point guidance, Gaming Presets browsing, and the Free-vs-PRO comparison. It has no time limit.
How many tweaks are Free?
Free includes 43 of the 192 total documented tweaks.
What does PRO unlock?
PRO unlocks the remaining 149 tweaks plus tools including Core Analyzer, Ethernet Tuning, Stretch Resolution, Priority Pinner, audio profile apply, and one-click apply-everything.
Is PRO a subscription?
No. PRO is a one-time purchase with no subscription or automatic renewal.
How much is PRO?
PRO is $19.99 USD as a one-time purchase through Gumroad.
Should I start with Free?
Yes if you want to test the real workflow first. Free includes the benchmark and Restore Center, so you can evaluate the app before deciding whether the additional PRO library and tools fit your needs.
Benchmark and results
Measure before believing.
The benchmark is a comparison on your machine, not a universal game-performance promise.
What does the benchmark do?
It compares before-and-after responsiveness signals including timer resolution, CPU jitter, DPC saturation, disk, memory, an input-latency proxy, and frame pacing. It also shows a variance margin so normal run-to-run wobble is not presented as a dramatic gain.
Why do benchmark results vary?
A PC is never perfectly still. Hardware, drivers, thermals, background activity, starting state, and the changes being tested can all affect a run. Look for a repeatable trend beyond normal variance.
What is Share My Score?
After a benchmark, YUKFUE can create a branded before-and-after card with the score and CPU/GPU names. It is saved to your PC and copied to the clipboard; you choose whether to share it.
Does a better score guarantee better Fortnite or game performance?
No. The score compares documented responsiveness signals; it is not a guaranteed FPS, latency, or outcome for Fortnite or any other game. Test the game and system behavior that matters to you.
Safety, SmartScreen, and admin rights
Understand the warning.
Publisher signing, antivirus scanning, and administrator access are different questions.
Why does YUKFUE request administrator rights?
Many Windows optimizations affect system-level settings such as the registry, services, and power plans. YUKFUE checks for elevation at launch and warns when it is not elevated; it does not hard-block launch.
Why might Windows SmartScreen appear?
The current installer is not code-signed, so SmartScreen may show “Unknown publisher” or “Windows protected your PC.” That notice concerns publisher signing and reputation.
Is a SmartScreen notice the same as an antivirus detection?
No. SmartScreen publisher/reputation messaging is not the same as an antivirus scan result, and it is not a guarantee that a file is safe. Treat separate Microsoft Defender or antivirus findings on their own merits.
Should I ignore antivirus warnings?
No. Do not blindly ignore or disable Windows security. Stop and verify the download source and file details against the official Download page; if they do not match, do not run the file.
Restore Center and reversibility
Keep the boundary visible.
Supported changes have restoration controls; rare one-way actions remain exceptions.
Does YUKFUE back up changes?
Before applying a supported tweak, YUKFUE saves the original setting. It also recommends creating a Windows restore point on first launch as an additional precaution.
Can I undo tweaks?
Supported applied changes appear in Restore Center and can be restored individually.
Are all actions reversible?
No. The rare actions that cannot be automatically undone are labeled as one-way before you apply them. Read those labels before proceeding.
Is Restore Center a full-system backup?
No. Restore Center manages restoration data for supported YUKFUE changes. It is not a full-system backup and cannot guarantee recovery from every possible Windows change or outcome.
Download and installation
Use the official path.
Use the official GitHub release path and verify the installer details before running it.
Where is the free download?
Use the YUKFUE Download page. It links directly to the official v6.40.0 installer on YUKFUE's GitHub Releases and shows the exact filename and SHA-256 for verification.
What if the official installer URL is not posted yet?
The official v6.40.0 URL is now posted on the Download page. If a future release is not listed there with its filename and checksum, wait rather than substituting a guessed filename, old reupload, or unknown link.
Is a SHA-256 checksum available?
Yes. The Download page publishes the exact v6.40.0 SHA-256 and a PowerShell command for checking the downloaded installer. A checksum match confirms file identity against the published value; it is not a universal safety guarantee.
Should I download reuploads from random links or chats?
No. Use the official GitHub asset linked from the Download page. Avoid mirrors, unsolicited binaries, and files passed through community chats; even the verified Discord support channel is not an official release host.
PRO purchase and activation
Buy once. Paste the key.
The public flow stays simple and avoids exposing licensing internals.
How do I buy PRO?
Buy through the official YUKFUE Gumroad product page for $19.99 USD as a one-time purchase.
How does the license key work?
Gumroad emails a license key after purchase. The key activates YUKFUE on your PC and is machine-bound.
Where do I paste the license key?
Open YUKFUE, open the license/activation dialog, and paste the key there to activate PRO.
Support
Help without invented timelines.
Use the documented support paths; no response-time promise is implied.
Where do I get help?
Visit the Support page for troubleshooting paths. For licensing or transfer issues, use the support contact shown in the app or on the Gumroad page.
Is Discord available?
Yes. The verified YUKFUE Discord is the primary community and support channel: discord.gg/Xw4a7UVaQS.
Are there guides?
Yes. Visit the Guides section for available walkthroughs and reference material.
Go deeper
Use the page built for the question.
Still deciding?
Start free. Measure your own result.
Use Free before deciding whether PRO’s additional tweaks and tools fit your PC and goals.
Visit Support →