fixup readme

README.md

@@ -210,6 +210,7 @@ If doing so in the `Debug` configuration and if your KSP install is modified to
   - **CollisionEnhancerFastUpdate** : Optimization of the `CollisionEnhancer` component (responsible for part to terrain collision detection).
   - **PartSystemsFastUpdate** : Optimization of various flight scene auxiliary subsystems : temperature gauges, highlighter, strut position tracking...
   - **MinorPerfTweaks** : Various small performance patches (volume normalizer, eva module checks)
+  - **FloatingOriginPerf** : General micro-optimization of floating origin shifts. Main benefit is in large particle count situations (ie, launches with many engines) but this helps a bit in other cases as well.
 - New KSP bufix : [**DragCubeLoadException**](https://github.com/KSPModdingLibs/KSPCommunityFixes/pull/232) [KSP 1.8.0 - 1.12.5] : Fix loading of drag cubes without a name failing with an IndexOutOfRangeException (contributed by @Nazfib).
 - New KSP bufix : [**TimeWarpBodyCollision**](https://github.com/KSPModdingLibs/KSPCommunityFixes/pull/259) [KSP 1.12.0 - 1.12.5] : Fix timewarp rate not always being limited on SOI transistions, sometimes resulting in failure to detect an encounter/collision with the body in the next SOI (contributed by @JonnyOThan).
 - New modding API improvement : [**KSPFieldEnumDesc**](https://github.com/KSPModdingLibs/KSPCommunityFixes/pull/243) [KSP 1.12.2 - 1.12.5] : Disabled by default, you can enable it with a MM patch. Adds display name and localization support for enum KSPFields. To use add `Description` attribute to the field (contributed by @siimav).