Windows tweaks catalog
31 tweaks in 7 categories with search and filters, a risk badge on each card and a toggle that applies or reverts it.
Free PC optimizer
Optimize your PC. Check what it changed.
KafkaBoost applies Windows tweaks and a CPU thermal tuning, takes a restore point first, and keeps every change reversible. No account, no licence key, no telemetry.
FreeOpen source (MIT licence)Windows 11 tested
Numbers you can check in the repository
31Windows tweaks in the catalog, each with a documented revert
195Pester tests for the PowerShell library
175Node tests for settings, languages, updates and apps
0accounts, licence keys or telemetry calls
How it works
Four steps, in this order
1
Analyze
A read-only look at your PC: hardware, Windows build, power plan and what is already tuned. Nothing is changed.
2
Restore point
Before the first tweak, KafkaBoost asks Windows for a System Restore point. Windows allows one per 24 hours, and the app tells you when it was skipped.
3
Apply
Switch tweaks one by one, or use Apply recommended (safe tweaks only). Each card says what it does and the previous value is saved.
4
Verify
The Dashboard re-checks the settings, for example after a Windows update, and a Fix it button re-applies only what drifted.
What is different
Built to be checked, not trusted blindly
Free and open source (MIT licence)
Nothing to buy and nothing to unlock. You can read every script the app runs.
Every change explained
Each tweak states what it changes and its trade-off. The catalog is a data file, not a black box.
Reversible by design
The previous value of every tweak is recorded, so turning it off restores what you had, not a guess.
Risk tiers
21 safe, 8 advanced and 2 risky tweaks. Risky ones need two confirmations and are never part of Apply recommended.
Notices when updates undo it
Windows updates can reset tuning. The health check compares today with the setup and offers a one-click fix.
No account, no telemetry
Settings stay on your PC. The only network calls are ones you start, like checking for an update.
Results
Measured on one laptop
The CPU thermal tuning (undervolt, boost caps, power limits) on a Lenovo Legion 83DE with an Intel Core i9-14900HX, in 19-minute CS2 sessions, logged with HWiNFO shared memory every 2 seconds.
90 °Cpeak CPU temperature (was 99-100 °C)
73 Wpeak package power (was 139 W)
0thermal-throttle samples in 19 minutes (was frequent)
~79 °Caverage CPU temperature after, flat over the session. Before: 91 °C
About the 91 °C: it is the owner’s own figure and is not backed by a recorded log. The old screenshots show maxima only. So the lower peak and the end of thermal throttling were measured; the average improvement is indicative, not measured. FPS was not measured.
These values belong to this chip and are not a recipe for another CPU. Details in the app docs · RESULTS.md
Features
What is in the app today
Cleanup
Sizes are measured first. You delete only what you tick, and the Recycle Bin is flagged as dangerous.
Restore points
List, create and open System Restore from the app. A safety point is requested before the first tweak.
Health check and CPU thermal tuning
The Dashboard notices when a Windows update undid the tuning and Fix it re-applies only what drifted. The thermal tuning itself is specific to the Legion 83DE.
Settings
Light, dark or system theme, English or Portuguese, tray behavior, notifications and a user-started update check.
System analysis
A read-only report of the computer, processor, graphics, memory, Windows build and power plan. It changes nothing.
Availability
Windows first. Other systems are untested.
| System | Status | Details |
|---|---|---|
| Windows 11 | Supported | Everything in the app. Tested on Windows 11 build 26300 on one laptop only. |
| Windows 10 | Not tested | Most tweaks should apply, but none were run on Windows 10. Some need a minimum build. |
| macOS | Never run | The code for a reduced feature set (analysis, settings, help) was written but never run on a Mac. Treat it as unavailable. |
| Linux | Never run | Same: written, never run on Linux. Tweaks, Cleanup and Restore are Windows-only by design. |
Try it, then undo it if you do not like it
Free, with no account. Every change can be reverted from the app.