From 99a926d27888c04990b374f9d69a202b0bacfd9d Mon Sep 17 00:00:00 2001
From: kd-11 <karokidii@gmail.com>
Date: Mon, 21 Sep 2026 20:29:12 +0300
Subject: [PATCH] rsx: Force a full pipeline stall before invoking USER_COMMAND
 callback

- Proven with hardware tests
---
 rpcs3/Emu/RSX/rsx_methods.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rpcs3/Emu/RSX/rsx_methods.cpp b/rpcs3/Emu/RSX/rsx_methods.cpp
index 9ee302a804..bdc7519f9a 100644
--- a/rpcs3/Emu/RSX/rsx_methods.cpp
+++ b/rpcs3/Emu/RSX/rsx_methods.cpp
@@ -67,6 +67,9 @@ namespace rsx
 
 	void user_command(context* ctx, u32, u32 arg)
 	{
+		// USER_COMMAND induces a full drain of the backend and frontend.
+		RSX(ctx)->sync();
+
 		if (!RSX(ctx)->isHLE)
 		{
 			sys_rsx_context_attribute(0x55555555, 0xFEF, 0, arg, 0, 0);