diff --git a/rpi4.nix b/rpi4.nix
index efc3cbe..2122f05 100644
--- a/rpi4.nix
+++ b/rpi4.nix
@@ -54,6 +54,7 @@ in with builtins; {
   # improve memory performance
   zramSwap.enable = true;
   zramSwap.algorithm = "zstd";
+  zramSwap.memoryPercent = 150;
 
   networking.domain = "home.felschr.com";