What changes on your PC

A program that asks for administrator rights should tell you what it does. Every item is here, one by one. The list of tweaks is built from the app's own texts, so it says what the app says.

How to go back

• Every switch turns off with one click. The Windows default comes back, or the previous value where the default varies from PC to PC. The exception is Memory Integrity turned off by someone else, which you turn back on in Windows Security because it checks your drivers first.
• Put everything back, in the Safety Center, restores the values the app found. It works on every plan.
• Uninstalling does the same for the tweaks still on. It also removes three timer boot settings (useplatformtick, disabledynamictick, useplatformclock), even if the app didn't set them.
• These don't go back as they were: removing pre-installed apps, turning off BitLocker, cleaning temp files, the repairs, the monitor refresh rate and apps installed from the Store. The DNS goes back to automatic, or to the servers it had if the adapter has a fixed IP.
• Before a profile or an advanced tweak the app tries to create a Windows restore point, unless it made one in the last week. If it can't, it tells you and you decide.

Free plan

PRO plan

Some items only show up if your PC can use them, like the ones for NVIDIA or AMD.

The rest of the app

• Game configs. They change the config files of the game you choose, game by game. The app saves the original first, and Restore puts it back even without a subscription.
• DNS. Sets the IPv4 DNS on the network adapter you choose. Restore sets it back to automatic, or to the servers it had if the adapter has a fixed IP.
• Game first. While you play it limits the upload of other programs to 85% of what was measured, with Windows rules that go away at restart.
• SvcHost Split Threshold. Changes a registry threshold that decides how many processes Windows services use. It needs a restart.
• RAM Cleaner. Empties Windows' standby memory when you ask.
• Auto Startup. Turns off the startup apps you choose, the way Task Manager does. Those the app turned off can come back on without a plan.
• Fix & Repair. They restart audio and the video driver, reset the network and clear shader caches. One turns off USB suspend and PCI Express power saving on the plan in use. They can't be undone, not even with Put everything back. They ask first, except clearing the shader caches.
• Microsoft Store. Installs the apps you choose with winget. They are other people's programs and stay if you remove the app.
• Start with Windows. On by default, unless you untick it during installation. It creates a scheduled task that opens the app in the tray when you sign in, with administrator rights without asking each time. With the box ticked, the X minimizes the app to the tray instead of closing it. You can turn it off from the gear at the bottom left, and uninstalling removes it.
• PawnIO. The signed driver needed to read the CPU temperature. You can refuse it during setup. It's someone else's program and stays among your installed apps even if you remove M4k Optimizer.

What it doesn't do

• It doesn't read or change game memory and doesn't inject anything.
• It sends no telemetry. What leaves the PC is written in the privacy policy.
• It doesn't promise a number of FPS. The Before and After page shows what changes on your PC, in numbers read from it.