diff --git a/custom-init.el b/custom-init.el
index 0f32042..f3fe6a9 100644
--- a/custom-init.el
+++ b/custom-init.el
@@ -10,8 +10,9 @@
 
 ;;; Code:
 
-;; Set GC at 300 MB for startup
-(setq gc-cons-threshold 300000000)
+;; Set GC at 500 MB for startup
+(setq gc-cons-threshold 500000000)
+(setq gc-cons-percentage 0.6)
 
 ;;; Use straight.el for package management
 (defvar bootstrap-version)
@@ -88,6 +89,7 @@
 
 ;; Restore GC to normal, but still high
 (setq gc-cons-threshold 100000000)
+(setq gc-cons-percentage 0.1)
 
 (provide '+custom-init)
 ;;; custom-init.el ends here
diff --git a/lang/rust.el b/lang/rust.el
index c256eb7..26e0361 100644
--- a/lang/rust.el
+++ b/lang/rust.el
@@ -14,11 +14,6 @@
   :defer t
   :requires (rust-mode))
 
-(use-package racer
-  :straight t
-  :defer t
-  :requires (rust-mode))
-
 (defun activate-rust-mode ()
   "All things for Rust mode."
   (interactive)
@@ -34,7 +29,6 @@
 
 (add-hook 'rust-mode-hook 'activate-rust-mode)
 (add-hook 'rust-mode-hook 'flycheck-rust-setup)
-(add-hook 'rust-mode-hook 'racer-mode)
 
 (provide '+custom-lang-rust)
 ;;; rust.el ends here
diff --git a/pkg/themes.el b/pkg/themes.el
index bf8ed99..bbe39d6 100644
--- a/pkg/themes.el
+++ b/pkg/themes.el
@@ -44,8 +44,8 @@
 
 (spaceline-emacs-theme)
 
-;; Zenburn with customizations
-(enable-theme 'base16-zenburn-modified)
+;; Harmonic light with customizations
+(enable-theme 'base16-harmonic-light-modified)
 
 (provide '+custom-pkg-themes)
 ;;; themes.el ends here