diff --git a/plugins/woocommerce/changelog/fix-46527-compatibility-layer-init b/plugins/woocommerce/changelog/fix-46527-compatibility-layer-init
new file mode 100644
index 00000000000..91dbcabb154
--- /dev/null
+++ b/plugins/woocommerce/changelog/fix-46527-compatibility-layer-init
@@ -0,0 +1,4 @@
+Significance: patch
+Type: performance
+
+Conditionally initialize block template compatibility classes
diff --git a/plugins/woocommerce/src/Blocks/Domain/Bootstrap.php b/plugins/woocommerce/src/Blocks/Domain/Bootstrap.php
index 7966386aceb..dbf929aa3fb 100644
--- a/plugins/woocommerce/src/Blocks/Domain/Bootstrap.php
+++ b/plugins/woocommerce/src/Blocks/Domain/Bootstrap.php
@@ -169,8 +169,6 @@ class Bootstrap {
 			$this->container->get( BlockPatterns::class );
 			$this->container->get( BlockTypesController::class );
 			$this->container->get( ClassicTemplatesCompatibility::class );
-			$this->container->get( ArchiveProductTemplatesCompatibility::class )->init();
-			$this->container->get( SingleProductTemplateCompatibility::class )->init();
 			$this->container->get( Notices::class )->init();
 			$this->container->get( PTKPatternsStore::class );
 			$this->container->get( TemplateOptions::class )->init();
@@ -276,18 +274,6 @@ class Bootstrap {
 				return new ClassicTemplatesCompatibility( $asset_data_registry );
 			}
 		);
-		$this->container->register(
-			ArchiveProductTemplatesCompatibility::class,
-			function () {
-				return new ArchiveProductTemplatesCompatibility();
-			}
-		);
-		$this->container->register(
-			SingleProductTemplateCompatibility::class,
-			function () {
-				return new SingleProductTemplateCompatibility();
-			}
-		);
 		$this->container->register(
 			DraftOrders::class,
 			function ( Container $container ) {
diff --git a/plugins/woocommerce/src/Blocks/Templates/AbstractTemplateCompatibility.php b/plugins/woocommerce/src/Blocks/Templates/AbstractTemplateCompatibility.php
index b06892291c3..cbd427547b0 100644
--- a/plugins/woocommerce/src/Blocks/Templates/AbstractTemplateCompatibility.php
+++ b/plugins/woocommerce/src/Blocks/Templates/AbstractTemplateCompatibility.php
@@ -21,10 +21,6 @@ abstract class AbstractTemplateCompatibility {
 	 * Initialization method.
 	 */
 	public function init() {
-		if ( ! wc_current_theme_is_fse_theme() ) {
-			return;
-		}
-
 		$this->set_hook_data();
 
 		add_filter(
diff --git a/plugins/woocommerce/src/Blocks/Templates/ProductAttributeTemplate.php b/plugins/woocommerce/src/Blocks/Templates/ProductAttributeTemplate.php
index 828133704a3..153eadb3c9f 100644
--- a/plugins/woocommerce/src/Blocks/Templates/ProductAttributeTemplate.php
+++ b/plugins/woocommerce/src/Blocks/Templates/ProductAttributeTemplate.php
@@ -2,6 +2,7 @@
 
 namespace Automattic\WooCommerce\Blocks\Templates;
 
+use Automattic\WooCommerce\Blocks\Templates\ArchiveProductTemplatesCompatibility;
 use Automattic\WooCommerce\Blocks\Utils\BlockTemplateUtils;
 
 /**
@@ -61,6 +62,9 @@ class ProductAttributeTemplate extends AbstractTemplate {
 		}
 
 		if ( isset( $queried_object->taxonomy ) && taxonomy_is_product_attribute( $queried_object->taxonomy ) ) {
+			$compatibility_layer = new ArchiveProductTemplatesCompatibility();
+			$compatibility_layer->init();
+
 			$templates = get_block_templates( array( 'slug__in' => array( self::SLUG ) ) );
 
 			if ( isset( $templates[0] ) && BlockTemplateUtils::template_has_legacy_template_block( $templates[0] ) ) {
diff --git a/plugins/woocommerce/src/Blocks/Templates/ProductCatalogTemplate.php b/plugins/woocommerce/src/Blocks/Templates/ProductCatalogTemplate.php
index 2f3d3383ccb..7059ed379b9 100644
--- a/plugins/woocommerce/src/Blocks/Templates/ProductCatalogTemplate.php
+++ b/plugins/woocommerce/src/Blocks/Templates/ProductCatalogTemplate.php
@@ -2,6 +2,7 @@
 
 namespace Automattic\WooCommerce\Blocks\Templates;
 
+use Automattic\WooCommerce\Blocks\Templates\ArchiveProductTemplatesCompatibility;
 use Automattic\WooCommerce\Blocks\Utils\BlockTemplateUtils;
 
 /**
@@ -49,6 +50,9 @@ class ProductCatalogTemplate extends AbstractTemplate {
 	 */
 	public function render_block_template() {
 		if ( ! is_embed() && ( is_post_type_archive( 'product' ) || is_page( wc_get_page_id( 'shop' ) ) ) ) {
+			$compatibility_layer = new ArchiveProductTemplatesCompatibility();
+			$compatibility_layer->init();
+
 			$templates = get_block_templates( array( 'slug__in' => array( self::SLUG ) ) );
 
 			if ( isset( $templates[0] ) && BlockTemplateUtils::template_has_legacy_template_block( $templates[0] ) ) {
diff --git a/plugins/woocommerce/src/Blocks/Templates/ProductCategoryTemplate.php b/plugins/woocommerce/src/Blocks/Templates/ProductCategoryTemplate.php
index 604cbb51aa7..233d7c2a877 100644
--- a/plugins/woocommerce/src/Blocks/Templates/ProductCategoryTemplate.php
+++ b/plugins/woocommerce/src/Blocks/Templates/ProductCategoryTemplate.php
@@ -2,6 +2,7 @@
 
 namespace Automattic\WooCommerce\Blocks\Templates;
 
+use Automattic\WooCommerce\Blocks\Templates\ArchiveProductTemplatesCompatibility;
 use Automattic\WooCommerce\Blocks\Utils\BlockTemplateUtils;
 
 /**
@@ -55,6 +56,9 @@ class ProductCategoryTemplate extends AbstractTemplate {
 	 */
 	public function render_block_template() {
 		if ( ! is_embed() && is_product_taxonomy() && is_tax( 'product_cat' ) ) {
+			$compatibility_layer = new ArchiveProductTemplatesCompatibility();
+			$compatibility_layer->init();
+
 			$templates = get_block_templates( array( 'slug__in' => array( self::SLUG ) ) );
 
 			if ( isset( $templates[0] ) && BlockTemplateUtils::template_has_legacy_template_block( $templates[0] ) ) {
diff --git a/plugins/woocommerce/src/Blocks/Templates/ProductSearchResultsTemplate.php b/plugins/woocommerce/src/Blocks/Templates/ProductSearchResultsTemplate.php
index ea8daab4768..c421fa7a0a0 100644
--- a/plugins/woocommerce/src/Blocks/Templates/ProductSearchResultsTemplate.php
+++ b/plugins/woocommerce/src/Blocks/Templates/ProductSearchResultsTemplate.php
@@ -1,6 +1,7 @@
 <?php
 namespace Automattic\WooCommerce\Blocks\Templates;
 
+use Automattic\WooCommerce\Blocks\Templates\ArchiveProductTemplatesCompatibility;
 use Automattic\WooCommerce\Blocks\Utils\BlockTemplateUtils;
 
 /**
@@ -48,6 +49,9 @@ class ProductSearchResultsTemplate extends AbstractTemplate {
 	 */
 	public function render_block_template() {
 		if ( ! is_embed() && is_post_type_archive( 'product' ) && is_search() ) {
+			$compatibility_layer = new ArchiveProductTemplatesCompatibility();
+			$compatibility_layer->init();
+
 			$templates = get_block_templates( array( 'slug__in' => array( self::SLUG ) ) );
 
 			if ( isset( $templates[0] ) && BlockTemplateUtils::template_has_legacy_template_block( $templates[0] ) ) {
diff --git a/plugins/woocommerce/src/Blocks/Templates/ProductTagTemplate.php b/plugins/woocommerce/src/Blocks/Templates/ProductTagTemplate.php
index 6049f429dcd..fef90fdc5ad 100644
--- a/plugins/woocommerce/src/Blocks/Templates/ProductTagTemplate.php
+++ b/plugins/woocommerce/src/Blocks/Templates/ProductTagTemplate.php
@@ -2,6 +2,7 @@
 
 namespace Automattic\WooCommerce\Blocks\Templates;
 
+use Automattic\WooCommerce\Blocks\Templates\ArchiveProductTemplatesCompatibility;
 use Automattic\WooCommerce\Blocks\Utils\BlockTemplateUtils;
 
 /**
@@ -55,6 +56,9 @@ class ProductTagTemplate extends AbstractTemplate {
 	 */
 	public function render_block_template() {
 		if ( ! is_embed() && is_product_taxonomy() && is_tax( 'product_tag' ) ) {
+			$compatibility_layer = new ArchiveProductTemplatesCompatibility();
+			$compatibility_layer->init();
+
 			$templates = get_block_templates( array( 'slug__in' => array( self::SLUG ) ) );
 
 			if ( isset( $templates[0] ) && BlockTemplateUtils::template_has_legacy_template_block( $templates[0] ) ) {
diff --git a/plugins/woocommerce/src/Blocks/Templates/SingleProductTemplate.php b/plugins/woocommerce/src/Blocks/Templates/SingleProductTemplate.php
index 69ef307fc3a..839ed177e09 100644
--- a/plugins/woocommerce/src/Blocks/Templates/SingleProductTemplate.php
+++ b/plugins/woocommerce/src/Blocks/Templates/SingleProductTemplate.php
@@ -51,6 +51,9 @@ class SingleProductTemplate extends AbstractTemplate {
 		if ( ! is_embed() && is_singular( 'product' ) ) {
 			global $post;
 
+			$compatibility_layer = new SingleProductTemplateCompatibility();
+			$compatibility_layer->init();
+
 			$valid_slugs         = array( self::SLUG );
 			$single_product_slug = 'product' === $post->post_type && $post->post_name ? 'single-product-' . $post->post_name : '';
 			if ( $single_product_slug ) {
diff --git a/plugins/woocommerce/src/Blocks/Templates/SingleProductTemplateCompatibility.php b/plugins/woocommerce/src/Blocks/Templates/SingleProductTemplateCompatibility.php
index f48d7697798..caa7b691576 100644
--- a/plugins/woocommerce/src/Blocks/Templates/SingleProductTemplateCompatibility.php
+++ b/plugins/woocommerce/src/Blocks/Templates/SingleProductTemplateCompatibility.php
@@ -14,7 +14,6 @@ class SingleProductTemplateCompatibility extends AbstractTemplateCompatibility {
 	const IS_FIRST_BLOCK = '__wooCommerceIsFirstBlock';
 	const IS_LAST_BLOCK  = '__wooCommerceIsLastBlock';
 
-
 	/**
 	 * Inject hooks to rendered content of corresponding blocks.
 	 *