---
title: "OptiScaler install guide | OptiScaler"
description: "A practical OptiScaler install workflow with backups, correct game executable placement, first launch checks, and reversible troubleshooting."
canonical: https://optiscaler.ink/guides/install-optiscaler-clean-setup
updated: 2026-10-18
---

# OptiScaler install guide: clean setup from start to finish

A practical OptiScaler install workflow with backups, correct game executable placement, first launch checks, and reversible troubleshooting.

## Facts (2026-10-18)

- **Version:** OptiScaler 0.9.4 (reference build, July 2026)
- **APIs:** DirectX 11, DirectX 12, Vulkan
- **Upscalers:** DLSS, FSR and XeSS inputs/outputs where compatible
- **Frame generation:** Experimental OptiFG (DirectX 12)
- **Overlay:** Insert key
- **Install:** ZIP extracted next to the main game executable
- **Platform:** Windows; Linux via Proton/Wine varies
- **Site:** Independent guide — not the official project site

## In short

A practical OptiScaler install workflow with backups, correct game executable placement, first launch checks, and reversible troubleshooting.

## Steps

1. Download the ZIP from [Download](https://optiscaler.ink/download) on this host.

2. Find the actual game executable, not only the launcher shortcut.

3. Back up files that may be replaced or renamed.

4. Extract the OptiScaler files beside that executable, using the proxy name the setup for that game asks for.

5. Launch offline first and press Insert to confirm the overlay appears.

6. Test one output mode at a time before changing advanced settings.

## Facts that do not change

Reference build is OptiScaler 0.9.4. Install is a ZIP next to the main game executable; the overlay opens with Insert. Avoid online or anti-cheat protected games, and test offline first.

## FAQ

### What is OptiScaler?

OptiScaler is a community tool that can intercept supported in-game upscaler calls and redirect them to another supported upscaling backend, with additional tuning options.

### How does OptiScaler work in a game?

The game exposes an input upscaler, OptiScaler sits between the game and the selected output backend, and the chosen output handles the final upscaling path where compatibility allows.

### Does OptiScaler support DirectX 11?

Yes, DirectX 11 is supported, although the available output methods and behavior can differ from DirectX 12.

### Does OptiScaler support DirectX 12?

Yes. DirectX 12 has broad support and is also the API used by experimental OptiFG functionality.

## Related

- [OptiScaler guides: install, FSR4, Linux, performance and safety](https://optiscaler.ink/guides)
- [OptiScaler FAQ: the official 20 questions, answered](https://optiscaler.ink/faq)
- [How OptiScaler works: input, output and overlay explained](https://optiscaler.ink/guides/how-optiscaler-works-input-output)
- [OptiScaler compatibility guide for DirectX 11, DirectX 12 and Vulkan](https://optiscaler.ink/guides/compatibility-dx11-dx12-vulkan)
- [Best OptiScaler performance settings: a practical tuning method](https://optiscaler.ink/guides/best-performance-settings)

## Download

ZIP next to the game executable: [Download OptiScaler](https://optiscaler.ink/download)

Markdown mirror: https://optiscaler.ink/guides/install-optiscaler-clean-setup.md