From 8977b1af6c716c4487573be7099fac17762b37e7 Mon Sep 17 00:00:00 2001
From: Jaredl-Dev <260281143+Jaredl-Dev@users.noreply.github.com>
Date: Mon, 24 Aug 2026 15:20:27 -0700
Subject: [PATCH] Fix delayed particle effect timing at 60Hz

---
 Core/GameEngine/Source/GameClient/FXList.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Core/GameEngine/Source/GameClient/FXList.cpp b/Core/GameEngine/Source/GameClient/FXList.cpp
index a2d09ba954e..1c3149564b7 100644
--- a/Core/GameEngine/Source/GameClient/FXList.cpp
+++ b/Core/GameEngine/Source/GameClient/FXList.cpp
@@ -647,8 +647,12 @@ class ParticleSystemFXNugget : public FXNugget
 					Real delayInMsec = m_delay.getValue();
 					if (delayInMsec >= 0.0f)
 					{
-						UnsignedInt delayInFrames = REAL_TO_INT_CEIL(ConvertDurationFromMsecsToFrames(delayInMsec));
-						sys->setInitialDelay(delayInFrames);
+						Real delayInFrames = ConvertDurationFromMsecsToFrames(delayInMsec);
+#if defined(GENERALS_ONLINE_HIGH_FPS_RENDER)
+						// Info: Particle systems update on legacy frames, so their delays must use the same cadence at 60Hz.
+						delayInFrames /= GENERALS_ONLINE_HIGH_FPS_FRAME_MULTIPLIER;
+#endif
+						sys->setInitialDelay(REAL_TO_INT_CEIL(delayInFrames));
 					}
 
 					if( m_useCallersRadius  &&  overrideRadius )