---
title: "Alt+Enter Exclusive Fullscreen & Flip Model Presentation — Bloxstrap Engine & FastFlag Reference"
description: "Configure Alt+Enter Exclusive Fullscreen & Flip Model Presentation (FFlagHandleAltEnterFullscreenManually) in Bloxstrap via FastFlag Editor. Supported values: False (allows Alt+Enter D3D11 fullscreen)."
canonical: https://bloxstraplabs.ink/engine/fullscreen-alt-enter-exclusive
updated: 2026-10-17
---

# Alt+Enter Exclusive Fullscreen & Flip Model Presentation

Lets Direct3D 11 enter lower-latency presentation mode when pressing Alt+Enter in fast-paced rhythm or FPS titles. Underlying key: FFlagHandleAltEnterFullscreenManually.

## Facts (2026-10-17)

- **Setting:** Alt+Enter Exclusive Fullscreen & Flip Model Presentation
- **FastFlag Key:** FFlagHandleAltEnterFullscreenManually
- **GUI Location:** FastFlag Editor
- **Supported Values:** False (allows Alt+Enter D3D11 fullscreen)

## How Alt+Enter Exclusive Fullscreen & Flip Model Presentation works in ClientAppSettings.json

Lets Direct3D 11 enter lower-latency presentation mode when pressing Alt+Enter in fast-paced rhythm or FPS titles.

When you adjust **FastFlag Editor** inside Bloxstrap, the bootstrapper writes `FFlagHandleAltEnterFullscreenManually` into `ClientSettings\ClientAppSettings.json` before `RobloxPlayerBeta.exe` initializes its renderer.

## Recommended values and stability tips

- **Accepted values:** `False (allows Alt+Enter D3D11 fullscreen)`. 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 "Alt+Enter Exclusive Fullscreen & Flip Model Presentation" control?

It manages `FFlagHandleAltEnterFullscreenManually` inside `ClientAppSettings.json`, accessible directly via **FastFlag Editor**.

### 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/fullscreen-alt-enter-exclusive.md