diff --git a/systems/ASUS-G46VW/configuration.nix b/systems/ASUS-G46VW/configuration.nix
index 4dba9dc..f1590cc 100644
--- a/systems/ASUS-G46VW/configuration.nix
+++ b/systems/ASUS-G46VW/configuration.nix
@@ -200,6 +200,16 @@
   services.syncthing.user = "paul";
   services.syncthing.group = "users";
 
+  # Set limits for esync (SteamPlay Proton)
+  systemd.extraConfig = "DefaultLimitNOFILE=1048576";
+
+  security.pam.loginLimits = [{
+    domain = "*";
+    type = "hard";
+    item = "nofile";
+    value = "1048576";
+  }];
+
   # This value determines the NixOS release with which your system is to be
   # compatible, in order to avoid breaking some software such as database
   # servers. You should change this only after NixOS release notes say you