diff --git a/nixos/boxes/foureighty.nix b/nixos/boxes/foureighty.nix
index 3f205fff..bf73e22f 100644
--- a/nixos/boxes/foureighty.nix
+++ b/nixos/boxes/foureighty.nix
@@ -43,4 +43,7 @@
     ../i3/system.nix
     ../distributed-builds.nix
   ];
+
+  nix.maxJobs = 4;
+  nix.buildCores = 2;
 }
diff --git a/nixos/distributed-builds.nix b/nixos/distributed-builds.nix
index 69b1be6a..f1493fab 100644
--- a/nixos/distributed-builds.nix
+++ b/nixos/distributed-builds.nix
@@ -6,8 +6,7 @@
       sshUser = "nix-builder";
       sshKey = "/home/cyryl/.ssh/id_ed25519";
       system = "x86_64-linux";
-      maxJobs = 2;
-      speedFactor = 1;
+      maxJobs = 1;
       supportedFeatures = [ "kvm" ];
       mandatoryFeatures = [ ];
     }
@@ -16,8 +15,7 @@
       sshUser = "nix-builder";
       sshKey = "/home/cyryl/.ssh/id_ed25519";
       system = "x86_64-linux";
-      maxJobs = 4;
-      speedFactor = 4;
+      maxJobs = 2;
       supportedFeatures = [ ];
       mandatoryFeatures = [ ];
     }