Performance
Batched registry writes, parallel execution and a persistent PowerShell host cut playbook run time to under 5 minutes — while the latency stack pushes DPC routines to enthusiast-grade lows.
v1.2.1 is out — deep telemetry & AI neutralizationWindows 11,
Windows 11,
finally unleashed.
UltraOS strips the bloat, locks down telemetry and tunes your system for latency — born from the best of AtlasOS & ReviOS, rebuilt from the ground up for 26H2. Runs in the AME Wizard you already trust.
UltraOS-Playbook-v1.2.1.apbx · 168 KB · SHA-256 verified · GPL-3.0
AME Wizard — UltraOS-26H2
- 0+
- Tuning actions
- 0×
- Faster execution
- 0%
- Reversible
- 26H2
- Build ready
Privacy
68 telemetry endpoints and policies are blocked at the OS level. Copilot, Recall, advertising ID and activity history are disabled by default — not just hidden from the Start menu.
Usability
Security-intact engineering: Windows Update, Defender, the Store and Search keep working. Three presets let you choose how deep the cut goes — everything is reversible in one click.
Why UltraOS?
The legacy tweak-set, rebuilt for 26H2.
UltraOS merges the proven tweak-set of AtlasOS and ReviOS with a rebuilt engine — updated registry paths, re-validated service configs, and an execution pipeline designed for speed.
Debloat Engine
Removes 47+ pre-installed UWP apps, sponsored shortcuts, and 30+ scheduled telemetry tasks in a single batched pass — the deepest clean that still keeps the Store alive.
Privacy Shield
Blocks 68 telemetry endpoints and policies via registry + local group policy. Copilot, Recall, advertising ID, and activity history are disabled at the OS level, not just hidden.
Gaming-Grade Latency
GameDVR off, HAGS on, timer resolution pinned, mouse acceleration removed and MMCSS scheduling tuned for games — the Atlas-proven latency stack, adapted and re-tested for 26H2's new scheduler.
Services, Rethought
23 services disabled, 12 reconfigured — each mapped against 26H2's changed service graph. v1.1.0 adds a Tuning extras page: SysMain, Search indexing, memory compression and HAGS are one warned, instantly revertible checkbox away.
3× Faster Execution
Batched registry writes, parallel action execution, and a persistent PowerShell host cut run time from ~14 minutes to under 5 — with a single reboot instead of three.
One-Click Rollback
An automatic System Restore point plus per-module manifests means you can revert the entire playbook, or just one module, without touching your files or apps.
Transparent Reporting
Every change is logged to a clean HTML report — what was modified, the old and new values, and why. No mystery tweaks, no hidden scripts, fully auditable.
Security Intact
Unlike legacy playbooks, UltraOS never breaks Windows Update or strips Defender definitions. You stay patched, protected, and secure — just faster and quieter.
Benchmarks
UltraOS vs. Stock Windows
Averaged from community-submitted results across 40+ systems — from budget laptops to 240 Hz gaming rigs, every value re-measured on final 26H2 builds.
Lower is better
Stock Windows 114.8GB
UltraOS-46%2.6GB
Measured after 10 min idle on a clean 26H2 install, 16 GB system.
Balanced preset used for fairness — the Ultra preset cuts even deeper. Full methodology and raw data published with every release.
Head-to-Head
Why we built it from scratch.
AtlasOS hasn't shipped a 26H2 playbook yet, and ReviOS 26.10 reaches deep — but through a closed-source tool and irreversible WinSxS component deletion. UltraOS carries their spirit forward with a rebuilt tweak set, verified on 26H2, where every change is plain YAML you can audit and undo.
| Capability | Stock Windows 11 | AtlasOS | ReviOS | UltraOS |
|---|---|---|---|---|
| Windows 11 26H2 support | — | No | 26.10 | Yes |
| Built for 26H2 from day one | — | No | No | Yes |
| Deep telemetry + agentic-AI neutralization | — | Partial | WinSxS cut | Yes |
| Depth without amputation (fully reversible) | — | Partial | No | Yes |
| Full run time | — | ~14 min | ~12 min | Yes, ~5 min |
| Reboots during run | — | 2–3 | 2 | Yes, 1 |
| Automatic restore point | — | Partial | Partial | Yes |
| Per-module rollback | — | No | No | Yes |
| HTML change report | — | No | No | Yes |
| Windows Update intact | Yes | Partial | Yes | Yes |
| Chooseable presets | — | 1 | 2 | Yes, 3 |
| Opt-in tuning extras (SysMain · indexing · HAGS) | — | No | No | Yes |
Based on AtlasOS 0.4 (last supported build: 24H2) and ReviOS 26.10 (26H1/26H2 support added Oct 2026; deep removals via the bundled Revision Tool), as of their public repositories. “WinSxS cut” = components deleted from the component store — same endpoints UltraOS neutralizes with reversible policies, minus the undo.
Presets
Three philosophies. One command.
Pick a preset during the wizard — or cherry-pick modules afterward. Every preset is fully reversible, and you can switch anytime by re-running the playbook.
Balanced
~3 minThe daily driver
Work, browsing & light gaming · 28 apps · 12 services
- Privacy shield — 68 policies
- Keeps Microsoft Store & UWP essentials
- Defender & Windows Update fully intact
- Gaming stack (HAGS, GameDVR off)
- Network latency tuning (Nagle off)
- VBS & CPU mitigations disabled
Performance
~4 minThe sweet spot
Gaming & content creation · 38 apps · 19 services
- Everything in Balanced
- Full gaming stack (HAGS, GameDVR off)
- Network latency tuning (Nagle off)
- Power plan & USB power gating tuned
- Widgets, Copilot & Recall removed
- VBS & CPU mitigations disabled
Ultra
~5 minNo compromises
Esports & benchmark rigs · 47 apps · 23 services
- Everything in Performance
- VBS & Spectre/Meltdown mitigations off
- SysMain, WSearch & spare services off
- Timer resolution pinned at 0.5 ms
- Edge & deep UWP removal available
- Warning: lowers exploit hardening
All presets keep Windows Update, drivers, and your personal files untouched. The Ultra preset trades some exploit hardening for latency — the wizard shows exactly what that means before you confirm. New in v1.1.0: a Tuning extras page lets any preset opt into SysMain, Search indexing, memory compression and HAGS toggles — each with its own warning and instant revert.
Getting Started
From stock to streamlined in under 10 minutes.
No reinstalls, no ISO downloads, no USB sticks. UltraOS works on your existing Windows 11 26H2 installation — and gets out of the way when it's done.
Install AME Wizard
Grab the free, open-source AME Wizard from ameliorated.io — the same trusted runner AtlasOS and ReviOS ship with. One small download, no installation bloat.
Import UltraOS
Download the UltraOS playbook (.apbx) and double-click it — AME Wizard picks it up automatically. The wizard verifies the SHA-256 signature before running — no extracting, no script folders, no confusion.
Pick a preset & run
Choose Balanced, Performance, or Ultra, review the plain-English summary, and hit start. A restore point is created first — then watch it finish in minutes.
FAQ
Questions, answered honestly.
The things people always ask before running a playbook on their daily machine — no marketing spin.
v1.2.1 — Depth Parity Release
Give your PC the 26H2 glow-up.
One download, five minutes, three presets. Your Windows — leaner, quieter, and faster than you've ever felt it.
UltraOS-Playbook-v1.2.1.apbx · 168 KB|SHA-256 verified
UltraOS is free and always will be — support development with a donation if it made your PC feel new again.
Flagged by your antivirus? It's a known false-positive pattern — read the transparency guide before you panic.