REPOPerformanceKit

A BepInEx plugin for R.E.P.O. that exposes a set of Unity engine configuration switches through a standard BepInEx config file. It does not patch any REPO game code.

The mod does not guarantee an FPS improvement. Whether it helps, hurts, or does nothing depends on your hardware, your other mods, and the specific scenes you play. Treat every feature as a knob you may or may not want to turn.

What the DLL actually does

On plugin Awake(), it reads its config file and then:

• Log filtering. If DisableUnityStackTraces = true, calls Application.SetStackTraceLogType(LogType.Log/Warning, StackTraceLogType.None) and sets Error/Exception/Assert to ScriptOnly. If SuppressPluginLogSpam or DedupeRepeatedLogs is true, inserts a custom BepInEx.Logging.ILogListener in front of the existing listeners. The listener drops any Info/Debug/Message line whose text contains one of the configured substrings, and collapses consecutive identical lines to a (previous message repeated N times) summary. Warnings/Errors/Fatals are never filtered by substring.

• Frame-rate related Unity values. Sets Time.maximumDeltaTime to the configured value (default 0.1). Optionally sets QualitySettings.vSyncCount (default: unchanged) and Application.targetFrameRate (default: unchanged).

• GC tuning. If EnableIncrementalGC = true, reflects into UnityEngine.Scripting.GarbageCollector.GCMode and sets it to Enabled. If that type or property isn't present, logs a warning and continues. If CollectGCOnSceneLoad = true, hooks SceneManager.sceneLoaded and calls GC.Collect() + GC.WaitForPendingFinalizers() on full (non-additive) scene loads.

• Mipmap streaming. If EnableTextureStreaming = true, sets QualitySettings.streamingMipmapsActive = true, streamingMipmapsMemoryBudget to the configured MB value (clamped to [128, 8192], default 1024), streamingMipmapsMaxLevelReduction = 2, streamingMipmapsMaxFileIORequests = 256, and streamingMipmapsAddAllCameras = true.

• Adaptive fixedDeltaTime. If EnableAdaptivePhysics = true, creates a DontDestroyOnLoad MonoBehaviour that samples smoothed unscaled FPS once per second. If smoothed FPS falls below DegradeBelowFps (default 40), sets Time.fixedDeltaTime to DegradedFixedDeltaTime (default 0.0333, i.e. 30 Hz). If it then rises above RecoverAboveFps (default 55), resets to BaselineFixedDeltaTime (default 0.02, i.e. 50 Hz).

• Layer cull distances. If EnableCullDistanceBoost = true, hooks SceneManager.sceneLoaded and sets Camera.main.layerCullDistances for layers 8..31 to farClipPlane * Multiplier, leaving layers 0..7 at the default. The default Multiplier is 1.0, which changes nothing. Only becomes effective if you lower it in the config file.

• Optional FPS overlay. If ShowFpsOverlay = true (default false), creates a DontDestroyOnLoad MonoBehaviour that draws a single IMGUI label in the top-left corner showing smoothed FPS, frametime in ms, and the current physics tick rate derived from Time.fixedDeltaTime.

That is the complete list of things this plugin does. Everything is driven by BepInEx/config/com.mentalize.repoperformance.cfg; the file is auto-generated with defaults on first run.

Install

Thunderstore Mod Manager: click Install. Manual: extract REPOPerformance.dll into <profile>/BepInEx/plugins/REPOPerformanceKit/. Requires BepInEx-BepInExPack.

Compatibility

Client-side. No Harmony patches on REPO code, no network traffic, no lobby compatibility requirement. Each player can install independently.

Note that on a networked host, lowering Time.fixedDeltaTime via the adaptive physics feature affects the physics tick rate of objects the host simulates authoritatively over Photon. If you host and notice networked rigidbody behaviour feel imprecise during performance dips, set EnableAdaptivePhysics = false.

Changelog

0.1.3

• Version bump (0.1.2 previously published).

0.1.2

• Rewrote description and README to strictly match the code's actual behaviour.

0.1.1

• Added TextureStreaming feature.

0.1.0

• Initial implementation (LogSuppressor, FrameRateTuner, GCTuner, AdaptivePhysics, CullDistanceBoost, FPSCounter).