A PC optimizer for Windows 11 that shows its work.

It looks at this PC first

48 read-only checks look for problems that cost frame rate or smoothness: a monitor running at 60 Hz, memory without its XMP or EXPO profile, the Power saver plan on a desktop, a game library on a hard disk. A check that cannot read a value says unknown and gives no advice.

A profile decides what is recommended and which impact counts: Gaming, Laptop gaming, Battery, Office, Quiet and cool, or Older PC. It changes nothing by itself.

All 48 checks

1. AMD Chipset Software not installed
2. AMD fTPM stutter (AM4)
3. AMD Software settings for gaming
4. Battery capacity worn
5. BIOS older than a year
6. Display refresh rate below its maximum
7. Drive health
8. Energy Saver is on while plugged in
9. Ethernet slower than the adapter supports
10. Game access: anti-cheat requirements
11. Game library on a hard disk
12. Games may run on the integrated graphics
13. Gaming laptop running on battery
14. Graphics card PCIe link width
15. Graphics card without a driver
16. Graphics driver older than six months
17. Hardware virtualization off in the BIOS
18. Integrated graphics enabled but unused
19. Intel 13th/14th gen: BIOS microcode update needed
20. Intel Application Optimization (APO)
21. Intel Core Ultra 200S: BIOS update with microcode
22. Laptop screen runs through the integrated GPU
23. Leftovers from other tweak tools
24. Low amount of memory (8 GB or less)
25. Low free space on a drive
26. Many programs start with Windows
27. Memory below its rated speed (XMP / EXPO)
28. Memory in single channel
29. Memory modules from different kits
30. Monitor connected to the motherboard instead of the graphics card
31. Monitor supports more than Windows offers
32. NVIDIA global settings limit every game
33. NVMe SSD link
34. Overlay and capture programs running
35. Power mode set to best power efficiency
36. Power saver plan on a desktop PC
37. Processor turbo disabled by the power plan
38. Programs busy in the background
39. Resizable BAR
40. Ryzen memory speed
41. Ryzen X3D with two chiplets: power plan
42. Secure Boot certificates from 2023
43. Throttling under load
44. TRIM disabled for SSDs
45. Unexpected shutdowns
46. Variable refresh rate (G-SYNC, FreeSync)
47. Wi-Fi connected on 2.4 GHz
48. Windows is installed on a hard disk

Everything it changes can be undone

1. 1Restore pointCreated before the first change, when System Protection is on.
2. 2BackupEach value is saved before it changes.
3. 3CheckAfter applying, each change is checked.
4. 4UndoThe Changes page lists every change with Undo, also after a restart or an update of the app.

After a Windows update, it shows which changes Windows reset and offers to apply them again.

Removed apps and deleted files are the exception, and the app says so before it removes them.

Most tweaks will not raise your frame rate

Every tweak rates its effect on games from 0 to 5, and the rating can change with the PC: Restore processor turbo rates 4 where the power plan holds the processor at its base clock, and 0 everywhere else. 206 of the 222 tweaks rate 0 on most PCs. Most of the catalog is about privacy, the browser and how Windows looks and behaves, and their pages say so.

The biggest difference usually comes from what the scan finds, such as a monitor at 60 Hz or memory below its rated speed.

Every claim has a source

Each check and each tweak has a page in English and German: what it does, why it can help, how solid the evidence is, the trade-offs, and the sources. Impact goes from 0 to 5 and names its basis: measured, situational or disputed. This is the page for a popular tweak the evidence does not support:

A tweak that is not yet proven on real hardware carries the badge "Not yet tested on a real PC" and is never part of Apply recommended.

What it leaves out, and why

Popular tweaks without evidence are not offered. Search for one in the app, and it tells you why.

• Realtime priority for games

  Microsoft warns that a realtime process preempts operating system threads and can make the mouse unresponsive. Source

• Spectre and Meltdown mitigations off

  Microsoft measured single-digit slowdowns that most users do not notice on the processors Windows 11 supports. A real security loss for a gain too small to notice. Source

• Win32PrioritySeparation = 0x26

  It is the value Windows already writes for "Adjust for best performance of: Programs". The tweak changes nothing on Windows 11. Source

• Turning off IPv6 completely

  Microsoft advises against it because some Windows components might stop working. The app offers "Prefer IPv4 over IPv6" instead. Source

• netsh TCP global tweaks

  They change every connection of the PC, and no measurement shows a gain in games. Ping in online games depends mostly on the route to the server.

• Registry cleaning

  Keys an uninstaller left behind take no measurable space, and no measurement shows that they slow Windows down. A wrong guess breaks programs that share them.

The full list, with sources

In numbers

48

Read-only checks

222

Tweaks

130

Reviewed removable apps

12

Cleanup categories

Get it

1. 1DownloadThe exe of the latest release.Download Tunero.exe66 MB
2. 2CheckCompare its SHA-256 with the .sha256 file on the release page.

   Get-FileHash Tunero.exe

3. 3StartIt needs no installation. On the first start it offers an entry in the Start menu.

With a package manager

Scoop

scoop bucket add tunero https://github.com/jozuern/scoop-bucketscoop install tunero/tunero

All releases

Questions

Will it make my games faster?

Sometimes. The biggest gains come from fixing real problems the scan finds, such as a monitor at 60 Hz or memory without XMP. Most tweaks change little, and each page says how solid the evidence is. The Health page has a frame time benchmark, so you can measure your own games.

Why does Windows warn when I start it?

The exe is not code signed yet. Signing by the SignPath Foundation is applied for. Until then, compare the SHA-256 of the download with the .sha256 file on the release page.

Why does it need administrator rights?

Most settings it changes apply to the whole PC. Its data folder is locked to administrators.

Does it work on Windows 11 Home?

Yes. Tweaks that rely on Group Policy are offered only on Pro, Enterprise and Education.

Can I remove it completely?

Settings > Uninstall offers to undo every change first. Then it removes the exe, its data folder and its Start menu entry.