diff --git a/systems/x86_64-linux/halo/default.nix b/systems/x86_64-linux/halo/default.nix
index 2fd701f..f08a695 100644
--- a/systems/x86_64-linux/halo/default.nix
+++ b/systems/x86_64-linux/halo/default.nix
@@ -15,7 +15,6 @@ with lib.metacfg;
 
   networking.firewall.allowedTCPPorts = [
     1234
-    8000
   ];
 
   systemd.tmpfiles.rules = 
diff --git a/systems/x86_64-linux/halo/hardware-configuration.nix b/systems/x86_64-linux/halo/hardware-configuration.nix
index 175e8eb..16d059a 100644
--- a/systems/x86_64-linux/halo/hardware-configuration.nix
+++ b/systems/x86_64-linux/halo/hardware-configuration.nix
@@ -31,10 +31,8 @@
     "quiet"
     "splash"
     "video=efifb:nobgrt"
-    "amdgpu.gttsize=126976"
-    "iommu=pt"
-    "ttm.pages_limit=32505856"
-    "amdgpu.cwsr_enable=0"
+    "ttm.pages_limit=31457280"
+    "ttm.page_pool_size=31457280"
   ];
 
   fileSystems."/" = {