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App wouldn't start / blocked by antivirus? A recent Windows Defender update mistakenly flagged the older build and stopped it from opening. This is fixed — download the latest version below and it starts normally. Your license and settings carry over unchanged.

The download is free to grab — it needs the license key from your purchase to unlock.

Release Candidate — v2.13.0 RC is a prerelease, not the stable release. It is the new fully compiled app (no PowerShell), offered for early testing. The current stable version remains v2.11.4 below.

Download Daito's Opti v2.13.0 RC (.zip)

v2.13.0 Release Candidate • Windows 10/11 64-bit • ~151 MiB • unsigned community build • hosted on GitHub Releases • release notes

Verify your download — SHA-256 of DaitosOpti-v2.13.0-rc.zip:

9E7F29E44E5E5AF359596A0BEFF85DAD7EF43EC82DB4F77D568CB02E228B8083

Installing the v2.13.0 RC

Unzip anywhere (e.g. your Desktop) — there is no installer. Keep all five files together in one folder.
Double-click DaitosOpti.exe. The app itself runs without admin; Windows asks for administrator permission only when you apply changes.
This RC is an unsigned community build: Windows SmartScreen may warn about an unknown publisher — click "More info" → "Run anyway" only after the SHA-256 above matches. That prompt is normal for an unsigned download and not a verdict on the tool.
Paste your license key when the activation screen appears. Your existing key and activation carry over. Done.

Stable version (v2.11.4)

Download Daito's Opti v2.11.4 — current stable (.zip)

Your license key is handed to you in your Discord buy ticket (or by e-mail if arranged there). Without a key the app only shows the activation screen (and its license-free "restore changes" view).

Installing the stable version

Unzip anywhere (e.g. your Desktop) — there is no installer to run. Keep the files together: DaitosOpti.exe and DaitosOpti.License.dll must stay in the same folder.
Double-click DaitosOpti.exe.
Windows asks for administrator permission (the tweaks need it) — click Yes.
Windows SmartScreen may warn about an unknown publisher — click "More info" → "Run anyway". That prompt is normal for a new unsigned download and not a verdict on the tool.
Paste your license key when the activation screen appears. Done.

Free tools

Daito's Bench — our free, open-source game benchmark. Measure a session (avg FPS, 1% / 0.1% lows, stutter spikes) and share the report card. No key, no account, no telemetry. Run it straight from PowerShell:

irm https://raw.githubusercontent.com/DaitoAK/daitos-bench/main/DaitosBench.ps1 | iex

Open source — read every line on GitHub before you run it. That's the point.

Lost your key?

Check your buy ticket in our Discord — the key was handed to you there. Bought by e-mail? Search your inbox for "Daito's Opti".
Still stuck? Open a support ticket in the Discord — or mail daitoak@outlook.com, and we'll sort it out.