diff --git a/src/main/java/me/clip/placeholderapi/replacer/CharsReplacer.java b/src/main/java/me/clip/placeholderapi/replacer/CharsReplacer.java
index 1d05ef4..7d87163 100644
--- a/src/main/java/me/clip/placeholderapi/replacer/CharsReplacer.java
+++ b/src/main/java/me/clip/placeholderapi/replacer/CharsReplacer.java
@@ -22,9 +22,7 @@ package me.clip.placeholderapi.replacer;
 
 import java.util.Locale;
 import java.util.function.Function;
-
 import me.clip.placeholderapi.expansion.PlaceholderExpansion;
-import org.bukkit.ChatColor;
 import org.bukkit.OfflinePlayer;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -38,98 +36,113 @@ public final class CharsReplacer implements Replacer {
         this.closure = closure;
     }
 
-
+    /**
+     * Translates placeholders within the provided text using a high-performance
+     * character-scanning approach.
+     * * <p>The method identifies placeholders delimited by the defined {@link Closure}
+     * (e.g., %identifier_params% or {identifier_params}). If a placeholder is
+     * successfully identified, the provided lookup function is used to fetch the
+     * corresponding {@link PlaceholderExpansion}.</p>
+     *
+     * @param text   The raw text containing potential placeholders to be replaced.
+     * @param player The {@link OfflinePlayer} to contextually parse the placeholders against.
+     * May be {@code null} if no player context is available.
+     * @param lookup A function that maps a lowercase identifier string to a registered
+     * {@link PlaceholderExpansion}.
+     * @return A string with all valid placeholders replaced by their respective values.
+     * Returns the original text if no placeholders are found.
+     */
     @NotNull
     @Override
     public String apply(@NotNull final String text, @Nullable final OfflinePlayer player,
                         @NotNull final Function<String, @Nullable PlaceholderExpansion> lookup) {
-        final char[] chars = text.toCharArray();
-        final StringBuilder builder = new StringBuilder(text.length());
+        final char head = closure.head;
+        int startPlaceholder = text.indexOf(head);
 
-        final StringBuilder identifier = new StringBuilder();
-        final StringBuilder parameters = new StringBuilder();
+        if (startPlaceholder == -1) {
+            return text;
+        }
 
-        for (int i = 0; i < chars.length; i++) {
-            final char l = chars[i];
+        final int length = text.length();
+        final StringBuilder builder = new StringBuilder(length + (length >> 3));
+        int cursor = 0;
 
-            if (l != closure.head || i + 1 >= chars.length) {
-                builder.append(l);
+        final char tail = closure.tail;
+
+        loop: do {
+            // Append plain text preceding the placeholder
+            if (startPlaceholder > cursor) {
+                builder.append(text, cursor, startPlaceholder);
+            }
+
+            final int endPlaceholder = text.indexOf(tail, startPlaceholder + 1);
+
+            if (endPlaceholder == -1) {
+                builder.append(text, startPlaceholder, length);
+                return builder.toString();
+            }
+
+            int underscoreIndex = -1;
+
+            for (int i = startPlaceholder + 1; i < endPlaceholder; i++) {
+                final char current = text.charAt(i);
+
+                if (current == ' ') {
+                    // Invalid placeholder (contains space).
+                    // Treat the opening symbol as literal text and search for the next one.
+                    builder.append(head);
+                    cursor = startPlaceholder + 1;
+                    startPlaceholder = text.indexOf(head, cursor);
+
+                    // Safety check: If no more placeholders exist, break to finalize
+                    if (startPlaceholder == -1) {
+                        break loop;
+                    }
+                    continue loop;
+                }
+
+                if (current == '_' && underscoreIndex == -1) {
+                    underscoreIndex = i;
+                }
+            }
+
+            if (underscoreIndex == -1) {
+                builder.append(text, startPlaceholder, endPlaceholder + 1);
+                cursor = endPlaceholder + 1;
+                startPlaceholder = text.indexOf(head, cursor);
                 continue;
             }
 
-            boolean identified = false;
-            boolean invalid = true;
-            boolean hadSpace = false;
+            String identifier = text.substring(startPlaceholder + 1, underscoreIndex);
+            String parameters = "";
 
-            while (++i < chars.length) {
-                final char p = chars[i];
-
-                if (p == ' ' && !identified) {
-                    hadSpace = true;
-                    break;
-                }
-                if (p == closure.tail) {
-                    invalid = false;
-                    break;
-                }
-
-                if (p == '_' && !identified) {
-                    identified = true;
-                    continue;
-                }
-
-                if (identified) {
-                    parameters.append(p);
-                } else {
-                    identifier.append(p);
-                }
+            if (underscoreIndex + 1 < endPlaceholder) {
+                parameters = text.substring(underscoreIndex + 1, endPlaceholder);
             }
 
-            final String identifierString = identifier.toString();
-            final String lowercaseIdentifierString = identifierString.toLowerCase(Locale.ROOT);
-            final String parametersString = parameters.toString();
+            final PlaceholderExpansion expansion = lookup.apply(identifier.toLowerCase(Locale.ROOT));
+            String replacement = null;
 
-            identifier.setLength(0);
-            parameters.setLength(0);
-
-            if (invalid) {
-                builder.append(closure.head).append(identifierString);
-
-                if (identified) {
-                    builder.append('_').append(parametersString);
-                }
-
-                if (hadSpace) {
-                    builder.append(' ');
-                }
-                continue;
+            if (expansion != null) {
+                replacement = expansion.onRequest(player, parameters);
             }
 
-            final PlaceholderExpansion placeholder = lookup.apply(lowercaseIdentifierString);
-            if (placeholder == null) {
-                builder.append(closure.head).append(identifierString);
-
-                if (identified) {
-                    builder.append('_');
-                }
-
-                builder.append(parametersString).append(closure.tail);
-                continue;
+            if (replacement != null) {
+                builder.append(replacement);
+            } else {
+                // Fallback: Restore original placeholder format
+                builder.append(head).append(identifier);
+                builder.append('_').append(parameters);
+                builder.append(tail);
             }
 
-            final String replacement = placeholder.onRequest(player, parametersString);
-            if (replacement == null) {
-                builder.append(closure.head).append(identifierString);
+            cursor = endPlaceholder + 1;
+            startPlaceholder = text.indexOf(head, cursor);
 
-                if (identified) {
-                    builder.append('_');
-                }
+        } while (startPlaceholder != -1);
 
-                builder.append(parametersString).append(closure.tail);
-                continue;
-            }
-
-            builder.append(replacement);
+        if (cursor < length) {
+            builder.append(text, cursor, length);
         }
 
         return builder.toString();