diff --git a/build/config/gn/flags.linux.release.gn b/build/config/gn/flags.linux.release.gn
index ac5780ef..c33f3747 100644
--- a/build/config/gn/flags.linux.release.gn
+++ b/build/config/gn/flags.linux.release.gn
@@ -33,8 +33,7 @@ symbol_level = 0
 blink_symbol_level = 0
 exclude_unwind_tables = true
 
-# Enable PGO (Profile-Guided Optimization)
-chrome_pgo_phase = 2
+chrome_pgo_phase = 0
 dcheck_always_on = false
 enable_swiftshader = false
 
diff --git a/build/config/gn/flags.macos.release.gn b/build/config/gn/flags.macos.release.gn
index e3d6ae3e..d689724f 100644
--- a/build/config/gn/flags.macos.release.gn
+++ b/build/config/gn/flags.macos.release.gn
@@ -4,7 +4,7 @@ is_component_build=false
 is_official_build=true
 symbol_level=0
 is_clang=true
-chrome_pgo_phase = 2
+chrome_pgo_phase = 0
 dcheck_always_on=false
 enable_sparkle=true
 
diff --git a/build/config/gn/flags.windows.release.gn b/build/config/gn/flags.windows.release.gn
index fcd048ed..4af6ffb4 100644
--- a/build/config/gn/flags.windows.release.gn
+++ b/build/config/gn/flags.windows.release.gn
@@ -6,7 +6,7 @@ is_component_build = false
 is_official_build = true
 symbol_level = 0
 is_clang=true
-chrome_pgo_phase = 2
+chrome_pgo_phase = 0
 dcheck_always_on=false
 enable_swiftshader=false
 proprietary_codecs=true