diff --git a/modules/graphical/shared.nix b/modules/graphical/shared.nix
index 5f49e17..1a0bbc7 100644
--- a/modules/graphical/shared.nix
+++ b/modules/graphical/shared.nix
@@ -38,7 +38,7 @@ in {
       programs.kdeconnect.enable = true;
       networking.firewall = {
         enable = true;
-        allowedTCPPorts = [ 25565 53317 ]; # localsend
+        allowedTCPPorts = [ 53317 ]; # localsend
         allowedUDPPorts = [ 1194 53317 ]; # openvpn, localsend
         allowedTCPPortRanges = [{
           from = 1714;
diff --git a/modules/misc/zram.nix b/modules/misc/zram.nix
index 9e040a2..6b8c2b3 100644
--- a/modules/misc/zram.nix
+++ b/modules/misc/zram.nix
@@ -1,5 +1,11 @@
-{ pkgs, lib, config, ...}: {
+{ pkgs, lib, config, ... }: {
   zramSwap = {
     enable = true;
   };
+  boot.kernel.sysctl = {
+    "vm.swappiness" = 180;
+    "vm.page-cluster" = 0;
+    #"vm.watermark_boost_factor" = 0;
+    #"vm.watermark_scale_factor" = 125;
+  };
 }
diff --git a/systems/amd-server/configuration.nix b/systems/amd-server/configuration.nix
index 334a028..b2040e4 100644
--- a/systems/amd-server/configuration.nix
+++ b/systems/amd-server/configuration.nix
@@ -68,6 +68,8 @@
         prefixLength = 24;
       }];
     };
+
+    firewall.allowedTCPPorts = [ 25565 25566 ]; # localsend
   };
 
   security.pki.certificates = [