update configuration

config.el

@@ -337,4 +337,23 @@ Funguje v libovolném textu, včetně Markdown linků (např. [x](./...))."
 ;; centered cursor mode
 (use-package! centered-cursor-mode
   :config
-  (centered-cursor-mode +1))
+  (setq ccm-vpos-init 0.5)   ;; 0.5 = střed okna
+  (global-centered-cursor-mode +1))
+
+
+
+
+;; Profiling
+(setq gc-cons-threshold (* 100 1024 1024)  ;; 100 MB
+      gc-cons-percentage 0.6)
+
+(add-hook 'focus-out-hook #'garbage-collect)
+
+(setq doom-modeline-refresh-rate 1.0) ;; default je 0.1–0.2
+
+(setq which-key-idle-delay 0.8
+      which-key-idle-secondary-delay 0.05)
+
+(setq org-idle-time 1.0)
+
+