diff --git a/src/agents/bash-tools.e2e.test.ts b/src/agents/bash-tools.e2e.test.ts
index a619e186d03..5484ab84975 100644
--- a/src/agents/bash-tools.e2e.test.ts
+++ b/src/agents/bash-tools.e2e.test.ts
@@ -223,7 +223,7 @@ describe("exec tool backgrounding", () => {
   });
 
   it("defaults process log to a bounded tail when no window is provided", async () => {
-    const lines = Array.from({ length: 260 }, (_value, index) => `line-${index + 1}`);
+    const lines = Array.from({ length: 220 }, (_value, index) => `line-${index + 1}`);
     const sessionId = await runBackgroundEchoLines(lines);
 
     const log = await processTool.execute("call2", {
@@ -232,11 +232,11 @@ describe("exec tool backgrounding", () => {
     });
     const textBlock = log.content.find((c) => c.type === "text")?.text ?? "";
     const firstLine = textBlock.split("\n")[0]?.trim();
-    expect(textBlock).toContain("showing last 200 of 260 lines");
-    expect(firstLine).toBe("line-61");
-    expect(textBlock).toContain("line-61");
-    expect(textBlock).toContain("line-260");
-    expect((log.details as { totalLines?: number }).totalLines).toBe(260);
+    expect(textBlock).toContain("showing last 200 of 220 lines");
+    expect(firstLine).toBe("line-21");
+    expect(textBlock).toContain("line-21");
+    expect(textBlock).toContain("line-220");
+    expect((log.details as { totalLines?: number }).totalLines).toBe(220);
   });
 
   it("supports line offsets for log slices", async () => {
@@ -258,7 +258,7 @@ describe("exec tool backgrounding", () => {
   });
 
   it("keeps offset-only log requests unbounded by default tail mode", async () => {
-    const lines = Array.from({ length: 260 }, (_value, index) => `line-${index + 1}`);
+    const lines = Array.from({ length: 220 }, (_value, index) => `line-${index + 1}`);
     const sessionId = await runBackgroundEchoLines(lines);
 
     const log = await processTool.execute("call2", {
@@ -270,9 +270,9 @@ describe("exec tool backgrounding", () => {
     const textBlock = log.content.find((c) => c.type === "text")?.text ?? "";
     const renderedLines = textBlock.split("\n");
     expect(renderedLines[0]?.trim()).toBe("line-31");
-    expect(renderedLines[renderedLines.length - 1]?.trim()).toBe("line-260");
+    expect(renderedLines[renderedLines.length - 1]?.trim()).toBe("line-220");
     expect(textBlock).not.toContain("showing last 200");
-    expect((log.details as { totalLines?: number }).totalLines).toBe(260);
+    expect((log.details as { totalLines?: number }).totalLines).toBe(220);
   });
 
   it("scopes process sessions by scopeKey", async () => {
diff --git a/src/agents/bash-tools.exec.background-abort.e2e.test.ts b/src/agents/bash-tools.exec.background-abort.e2e.test.ts
index 2e1e2fb8bbc..5191ef54c79 100644
--- a/src/agents/bash-tools.exec.background-abort.e2e.test.ts
+++ b/src/agents/bash-tools.exec.background-abort.e2e.test.ts
@@ -7,11 +7,11 @@ import {
 import { createExecTool } from "./bash-tools.exec.js";
 import { killProcessTree } from "./shell-utils.js";
 
-const BACKGROUND_HOLD_CMD = 'node -e "setTimeout(() => {}, 500)"';
+const BACKGROUND_HOLD_CMD = 'node -e "setTimeout(() => {}, 250)"';
 const ABORT_SETTLE_MS = process.platform === "win32" ? 200 : 60;
-const ABORT_WAIT_TIMEOUT_MS = process.platform === "win32" ? 1_500 : 450;
+const ABORT_WAIT_TIMEOUT_MS = process.platform === "win32" ? 1_500 : 320;
 const POLL_INTERVAL_MS = 15;
-const FINISHED_WAIT_TIMEOUT_MS = process.platform === "win32" ? 8_000 : 1_200;
+const FINISHED_WAIT_TIMEOUT_MS = process.platform === "win32" ? 8_000 : 900;
 const BACKGROUND_TIMEOUT_SEC = process.platform === "win32" ? 0.2 : 0.12;
 const TEST_EXEC_DEFAULTS = {
   security: "full" as const,