diff --git a/NucleicRemote/NucleicRemote/Views/SessionsView.swift b/NucleicRemote/NucleicRemote/Views/SessionsView.swift
index cd4be2a..9b6ef9d 100644
--- a/NucleicRemote/NucleicRemote/Views/SessionsView.swift
+++ b/NucleicRemote/NucleicRemote/Views/SessionsView.swift
@@ -11,9 +11,15 @@ struct SessionsView: View {
     private var grouped: [(title: String, rows: [WireSessionSummary])] {
         let pool = (showArchived ? store.sessions : store.liveSessions)
             .sorted(by: StatusStyle.attentionThenRecency)
-        let needs = pool.filter { $0.status.needsYou($0.disposition) }
-        let running = pool.filter { $0.status == .running || $0.status == .provisioning || $0.status == .idle }
-        let done = pool.filter { !needs.contains($0) && !running.contains($0) }
+        // One pass, first bucket wins — the old `done = pool.filter { !needs.contains($0) … }`
+        // ran O(rows²) full-summary equality scans on every body evaluation.
+        var needs: [WireSessionSummary] = [], running: [WireSessionSummary] = [], done: [WireSessionSummary] = []
+        for summary in pool {
+            if summary.status.needsYou(summary.disposition) { needs.append(summary) }
+            else if summary.status == .running || summary.status == .provisioning || summary.status == .idle {
+                running.append(summary)
+            } else { done.append(summary) }
+        }
         return [("Needs you", needs), ("Running", running), ("Done", done)].filter { !$0.rows.isEmpty }
     }