---
title: "Disable Player Shadows & Post-Processing Effects — Bloxstrap Engine & FastFlag Reference"
description: "Configure Disable Player Shadows & Post-Processing Effects (FIntRenderShadowIntensity / FFlagDisablePostFx) in Bloxstrap via Engine Settings & FastFlag Editor. Supported values: ShadowIntensity = 0, DisablePostFx = True."
canonical: https://bloxstraplabs.ink/engine/disable-player-shadows-post-fx
updated: 2026-10-17
---

# Disable Player Shadows & Post-Processing Effects

Turns off dynamic character shadows and bloom/depth-of-field blur to boost visibility and 1% low frame times. Underlying key: FIntRenderShadowIntensity / FFlagDisablePostFx.

## Facts (2026-10-17)

- **Setting:** Disable Player Shadows & Post-Processing Effects
- **FastFlag Key:** FIntRenderShadowIntensity / FFlagDisablePostFx
- **GUI Location:** Engine Settings & FastFlag Editor
- **Supported Values:** ShadowIntensity = 0, DisablePostFx = True

## How Disable Player Shadows & Post-Processing Effects works in ClientAppSettings.json

Turns off dynamic character shadows and bloom/depth-of-field blur to boost visibility and 1% low frame times.

When you adjust **Engine Settings & FastFlag Editor** inside Bloxstrap, the bootstrapper writes `FIntRenderShadowIntensity / FFlagDisablePostFx` into `ClientSettings\ClientAppSettings.json` before `RobloxPlayerBeta.exe` initializes its renderer.

## Recommended values and stability tips

- **Accepted values:** `ShadowIntensity = 0, DisablePostFx = True`. 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 Player Shadows & Post-Processing Effects" control?

It manages `FIntRenderShadowIntensity / FFlagDisablePostFx` inside `ClientAppSettings.json`, accessible directly via **Engine Settings & 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/disable-player-shadows-post-fx.md