Prevent timeouts with option + reduce number of thumbnails generated by script

includes/class-wc-regenerate-images.php

@@ -172,8 +172,10 @@ class WC_Regenerate_Images {
 	 * Check if we should generate images when new themes declares custom sizes.
 	 */
 	public static function maybe_regenerate_image_theme_switch() {
+		if ( wc_get_theme_support( 'single_image_width' ) || wc_get_theme_support( 'thumbnail_image_width' ) ) {
 			self::queue_image_regeneration();
 		}
+	}
 
 	/**
 	 * Get list of images and queue them for regeneration