From 4483501011d2a94e20b4e00023757963b84a5c7f Mon Sep 17 00:00:00 2001
From: Sorgelig <pour.garbage@gmail.com>
Date: Sun, 17 Dec 2023 00:14:34 +0800
Subject: [PATCH] user_io: don't waste time for crc32 if cheats aren't used.

---
 user_io.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/user_io.cpp b/user_io.cpp
index f387b4f..f495148 100644
--- a/user_io.cpp
+++ b/user_io.cpp
@@ -2657,7 +2657,7 @@ int user_io_file_tx(const char* name, unsigned char index, char opensave, char m
 				uint32_t chunk = (bytes2send > (256 * 1024)) ? (256 * 1024) : bytes2send;
 				FileReadAdv(&f, mem + size - bytes2send + gap, chunk);
 
-				if(!is_snes()) file_crc = crc32(file_crc, mem + skip + size - bytes2send, chunk - skip);
+				if(!is_snes() && use_cheats) file_crc = crc32(file_crc, mem + skip + size - bytes2send, chunk - skip);
 				skip = 0;
 
 				if (use_progress) ProgressMessage("Loading", f.name, size - bytes2send, size);