---
title: "Disable DPI Scaling (Fix Blurry 125% / 150% Windows Display) — Bloxstrap Engine & FastFlag Reference"
description: "Configure Disable DPI Scaling (Fix Blurry 125% / 150% Windows Display) (FFlagDisableDPIScale) in Bloxstrap via Engine Settings → Disable DPI scaling. Supported values: True / False."
canonical: https://bloxstraplabs.ink/engine/dpi-scaling-high-res-fix
updated: 2026-10-17
---

# Disable DPI Scaling (Fix Blurry 125% / 150% Windows Display)

Renders the Roblox viewport and UI at native 1:1 monitor pixels on 1440p and 4K laptops using Windows 125% or 150% scaling. Underlying key: FFlagDisableDPIScale.

## Facts (2026-10-17)

- **Setting:** Disable DPI Scaling (Fix Blurry 125% / 150% Windows Display)
- **FastFlag Key:** FFlagDisableDPIScale
- **GUI Location:** Engine Settings → Disable DPI scaling
- **Supported Values:** True / False

## How Disable DPI Scaling (Fix Blurry 125% / 150% Windows Display) works in ClientAppSettings.json

Renders the Roblox viewport and UI at native 1:1 monitor pixels on 1440p and 4K laptops using Windows 125% or 150% scaling.

When you adjust **Engine Settings → Disable DPI scaling** inside Bloxstrap, the bootstrapper writes `FFlagDisableDPIScale` into `ClientSettings\ClientAppSettings.json` before `RobloxPlayerBeta.exe` initializes its renderer.

## Recommended values and stability tips

- **Accepted values:** `True / False`. Stick to the built-in GUI preset under [Engine Settings](https://bloxstraplabs.ink/engine) unless you are testing a specific JSON override.
- **Resetting:** If a custom value causes visual artifacts or a startup crash, use [Reset FastFlags to default](https://bloxstraplabs.ink/engine/how-to-reset-fastflags-to-default-bloxstrap).
- **Installer:** Download the latest Windows build of Bloxstrap from [/download](https://bloxstraplabs.ink/download).

## FAQ

### What FastFlag does "Disable DPI Scaling (Fix Blurry 125% / 150% Windows Display)" control?

It manages `FFlagDisableDPIScale` inside `ClientAppSettings.json`, accessible directly via **Engine Settings → Disable DPI scaling**.

### Will this setting reset when Roblox updates?

No. Bloxstrap rewrites `ClientAppSettings.json` into the new Roblox version folder on every launch.

## Related

- [Bloxstrap Engine & FastFlags](https://bloxstraplabs.ink/engine)
- [Best Bloxstrap FastFlags for High FPS & Smooth Frame Pacing](https://bloxstraplabs.ink/engine/best-bloxstrap-fastflags-for-fps-and-low-ping)
- [FastFlags (FFlag, DFInt, FString, FLog)](https://bloxstraplabs.ink/words/fastflags-fflags)
- [Bloxstrap Windows Setup & Installation](https://bloxstraplabs.ink/setup)
- [Framerate Limit / FPS Unlocker (DFIntTaskSchedulerTargetFps)](https://bloxstraplabs.ink/engine/dfint-task-scheduler-target-fps)

## Download

Free Windows app: [Download Bloxstrap](https://bloxstraplabs.ink/download)

Markdown mirror: https://bloxstraplabs.ink/engine/dpi-scaling-high-res-fix.md