diff --git a/.clang-tidy b/.clang-tidy
index ecc6b8e..999e4c6 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -1,7 +1,15 @@
 ---
 # Configuration for clang-tidy
+# Use a focused set of checks instead of * to improve performance
 Checks: >
-  *,
+  bugprone-*,
+  cppcoreguidelines-*,
+  modernize-*,
+  performance-*,
+  readability-*,
+  cert-*,
+  clang-analyzer-*,
+  misc-*,
   -abseil-*,
   -altera-*,
   -android-*,
@@ -20,7 +28,6 @@ Checks: >
   -cppcoreguidelines-avoid-c-arrays,
   -cppcoreguidelines-pro-bounds-constant-array-index,
   -cppcoreguidelines-pro-bounds-array-to-pointer-decay,
-  -hicpp-no-array-decay,
   -cppcoreguidelines-avoid-magic-numbers,
   -readability-magic-numbers,
   -cert-err34-c,
@@ -33,8 +40,8 @@ Checks: >
   -bugprone-exception-escape,
   -cppcoreguidelines-avoid-const-or-ref-data-members
 
-# Exclude Google Test and external dependencies from analysis
-HeaderFilterRegex: "^(?!.*(gtest|googletest|gmock|third_party|external|vendor|/opt/homebrew/)).*"
+# Only analyze our source files, not system headers or external dependencies
+HeaderFilterRegex: "^(problems|common)/.*\\.(h|cc)$"
 
 CheckOptions:
   - key: readability-identifier-naming.NamespaceCase
diff --git a/Makefile b/Makefile
index f13346a..6d59000 100644
--- a/Makefile
+++ b/Makefile
@@ -208,10 +208,9 @@ lint:
 lint-cpp:
 	@echo "Linting C++ files..."
 	@if command -v clang-tidy >/dev/null; then \
-		find $(PROBLEMS_DIR) $(COMMON_DIR) -type f \( -name '*.cc' -o -name '*.h' \) | while read -r file; do \
-			clang-tidy "$$file" --config-file=.clang-tidy --quiet -- $(CXXFLAGS) -x c++ 2>&1 | \
-			grep -v "warnings generated\|Suppressed.*warnings\|Use -header-filter\|Use -system-headers" || true; \
-		done; \
+		find $(PROBLEMS_DIR) $(COMMON_DIR) -type f \( -name '*.cc' -o -name '*.h' \) -print0 | \
+		xargs -0 -P 4 -I {} clang-tidy {} --config-file=.clang-tidy --quiet --header-filter="^(problems|common)/.*\\.(h|cc)$$" -- $(CXXFLAGS) -x c++ 2>/dev/null | \
+		grep -E "^[^:]+:[0-9]+:[0-9]+:" || true; \
 		echo "$(call color_green,C++ linting complete.)"; \
 	else \
 		echo "$(call color_red,clang-tidy not found. Please install it to lint C++ files.)"; \