Swofty's addons

Swofty publishes these addons in the Addon Browser, next to everyone else's. Install them from there; they arrive switched off in every profile.

Addon	Id	By
F1 25 RE-Optimization	xanpavle.re-optimization	xanpavle, ported by Swofty
Career Mode Editor	swofty.career-editor	Swofty
Driver Manager	swofty.driver-manager	Swofty
R&D: Tyres & Thermal Management	swofty.rnd-tyres-thermal	Swofty

Install, update or remove one

• Install it: open the Addon Browser, find it, and select Install. The launcher opens the Addons page with the new addon highlighted.
• Turn it on: on the Addons page, toggle its switch in the profile you want it in, then press Play. From a terminal: swofty addons enable <id>.
• Update it: when Swofty publishes a new version, Play becomes Update addons. See Updating.
• Remove it: expand its row on the Addons page and select Remove addon. Install it again from the Addon Browser to get it back.

Launchers before 1.4.0 carried these addons in an addons/ folder next to bin/. Updating to 1.4.0 removes that folder; the installed copies stay installed and update from the Addon Browser.

F1 25 RE-Optimization

F1 25 RE-Optimization is xanpavle's renderer optimisation for F1 25, released under the MIT licence. Swofty ported it to a launcher addon with his permission. It makes the renderer do less work: it lowers a set of quality settings that cost a lot of GPU time, holds the expensive shadow, fog and crowd values down inside the engine, overrides a few engine-level renderer limits, and picks the upscaler your GPU supports. It tracks upstream 0.2.5.

• It is off until you turn it on.
• It works offline and in single-player only, like every modded session.
• It is made for the Steam build of F1 25 (build 25251167). On any other build its hooks don't install, and swofty/loader.log says so with SAFE.
• It doesn't change hardware_settings_config.xml in your Documents folder. The addon lowers the settings in memory as the game reads the file. When the game saves the file, for example after you change a graphics option, the values the addon lowered go back to yours.

What it lowers

The graphics profile lowers these on top of whatever preset you pick:

Setting	Before (example)	With the profile
Volumetric fog map	1920 × 1080	512 × 288
World and night shadow maps	4096	2048
32-bit sky shadow map	on	off
Shadow and spot shadow sampling	3	2
Crowd shadows	on	off
Screen-space reflections (SSR) quality	4	2
Ambient occlusion (SSAO)	3	1
Grass draw distance	120 m	80 m
Crowd billboard distance	6000	2500
High-quality particles	on	off
Hair	on	off
God rays, lens streak, motion blur v2	on	off
Car reflection maps		scale 1.0, one cube face updated per frame
Procedural cloud render scale		2.0
Skid mark parallax	on	off
Texture streaming texel density bias		0.25
GPU culling (cs_culling)	off	on
Ray-traced ambient occlusion and DDGI	on	off

It leaves resolution, your preset, mirrors, ray-traced shadows and reflections, rain, the upscaler quality level (Quality, Balanced, Performance) and frame generation alone.

What it holds in the engine

The game clamps shadow, fog and crowd settings to your graphics preset after it reads the settings file. In-engine enforcement sets these where the engine reads them, after that clamp:

Setting	Tuned value
World, night, sky and spot shadow maps	2048
Sky shadow cascades, night shadow sources	4
Shadow and spot shadow sampling	2
Volumetric fog map	512 × 288
Crowd billboard distance	2500
Texture streaming budget	2048 MiB

• Cheaper (the default) uses the lower of your preset's value and the tuned value, and turns off sky-shadow low LOD, the 32-bit sky shadow map, crowd shadows, god rays, lens streak and motion blur v2. It never turns an effect on.
• Target always uses the tuned value, turns the same effects off, and keeps rain, track heat haze, ground cover, grass flattening, volumetric fog and night character shadows on.
• Off leaves the engine's values.

Settings

You'll find these in the addon's row on the Addons page and under ADDON SETTINGS in game.

Setting	Id	Default	Does
Apply the graphics profile	apply_profile	on	Lowers the settings in What it lowers
Keep ray-traced AO and DDGI	keep_rt_ao_ddgi	off	Leaves ray-traced ambient occlusion and DDGI as you set them
In-engine enforcement	enforce_mode	cheaper	cheaper, target or off, as in What it holds in the engine
Pin effects	pin_effects	on	Turns the effects in What it holds in the engine off (and, in Target mode, on); off leaves them to your preset
Upscaler	upscaler	auto	Picks the upscaler: auto, dlss, fsr3, xess, taa, off (no anti-aliasing) or keep (your in-game choice)
VRS and async compute	override_vrs_async	on	Turns on variable rate shading (Renderer.Gfx.enableVRS) and async compute (Renderer.Gfx.enableAsyncCompute)
Grass and ground cover caps	override_ground_cover	on	Caps ground-cover instances: groundCoverMaxInstances 40000, groundCover2MaxInstances 80000, groundCover2MaxMeshInstances 4000, and turns off groundCoverForceUltraQuality
Static instance caps	override_instance_caps	on	Sets Renderer.maxStaticInstances and Renderer.maxPVSRenderInstances to 20000. Distant props can pop in
Log setting reads	log_reads	off	Writes every engine setting the game reads, and each change, to swofty/loader.log

The graphics profile, the upscaler and the enforcement mode apply when the game reads its settings at launch, so a change to any of them applies on the next launch. The upscaler applies with the profile on or off. FSR 3 is written the way the game reads it (fsr3="1" with cas="1"); before 0.2.5 a forced or automatic FSR 3 did not engage.

With upscaler set to auto, the addon picks by GPU:

GPU	Upscaler
NVIDIA RTX 20, 30, 40 and 50 series	DLSS
NVIDIA GTX 10 and 16 series	FSR 3
AMD Radeon	FSR 3
Intel Arc	XeSS
Other Intel GPUs	FSR 3
Not detected	Your in-game choice

Its log

The addon writes to swofty/loader.log in the game folder. Its lines start with [re-opt]: the GPU it detected, the upscaler it picked, the settings it lowered and each hook it installed or skipped.