v4.0: Full Interactive Mode + 29-Agent Audited

🚀 v4.0 — The Complete Package

29 autonomous AI agents audited, fixed, and enhanced this script across 6 rounds.

🎮 NEW: Interactive Mode Selection

Run without -Mode and get a beautiful 4-option menu:

• [1] THROUGHPUT — max bandwidth (autotuning=experimental, cubic, LSO/RSC ON)
• [2] LOW LATENCY — min ping (Nagle OFF, ctcp, LSO/RSC OFF, MMCSS=0)
• [3] BALANCED — compromise (adaptive, cubic, Nagle OFF)
• [4] FULL MAX — throughput + telemetry OFF + Cloudflare DNS + ALL adapters

No more .bat launcher needed — the script is fully self-contained!

🔧 Bugs Fixed (since v3.0)

• $esc[...] string interpolation parse error (19 places)
• UTF-8 encoding crash on Windows PS 5.x (added BOM + [char] escapes)
• [char] * [int] undefined operation (6 places → [string][char])
• Switch without break causing System.Object[] in OS display
• Mullvad DNS (DoH-only, dead on port 53) → replaced with dns0.eu
• powercfg tweaks lost after power plan switch (reordered)
• Restore falsely reports success with 0 properties
• Dingbat spinner chars absent from Consolas → Geometric Shapes

🌍 Multi-Language Support

• RegistryKeyword fallback matching for ALL 66 settings
• Works on French, German, Chinese, Japanese, ANY Windows language

🛡️ 32-bit PowerShell Protection

• Detects 32-bit PS on 64-bit Windows
• Skips MMCSS + DeliveryOptimization registry writes
• Clear warnings with path to correct 64-bit PowerShell

🎨 Claude Code-Style Terminal UI

• ANSI truecolor Unicode banner with gradient mode text
• 6-frame spinner animation at every phase
• Unicode status symbols: ● OK, ○ applying, ◆ warning, ✦ tip
• Progress bars during multi-adapter optimization
• Mode-aware ASCII art (⚡/💎/⚖)
• Graceful ASCII fallback for ISE / Server 2012 R2

📊 Stats

• 1968 lines PowerShell (+514 from v3.0)
• 0 syntax errors, braces 502/502 balanced
• 35 functions, 66 NIC patterns with multi-language Keywords
• 21 DNS providers (Mullvad → dns0.eu)
• 7 files tracked (CHANGELOG, .gitattributes, README, LICENSE)

⚠️ Production-Ready — Tested on Live Windows

Confirmed working on Windows 11 build 26200, Realtek Gaming GbE, PowerShell 5.1

v3.1-dev: AI-Audited Terminal UI Overhaul

🧠 Multi-Agent AI Audit + Claude-Style Terminal UI

16 AI agents analyzed, fixed, and enhanced this script across 3 rounds.

🔧 Bug Fixes (CRITICAL → LOW)

• DWORD overflow: NetworkThrottlingIndex ([int]-1) → 4294967295 (0xFFFFFFFF)
• IPv6 detection regex tightened (was matching MACs and port numbers)
• Polish regex patterns anchored (false-positive substring matches)
• Backup validation: aborts optimization if backup creation fails
• Restore-FromBackup crash guards: index bounds, JSON parse safety, adapter name from JSON
• Pre-Win8.1 graceful exit instead of Get-NetAdapter crash
• All exit calls → return (dot-source safe, no longer kills console)
• Dot-source guard wrapped around entire main execution
• .bat: input validation, stale env vars, admin check, CRLF docs, -All warning

🎨 Claude Code-Style Terminal UI

• ANSI truecolor Unicode banner: rounded box ╭─╮ + gradient text
• 6-frame spinner animation (·✻✽✶✳✢) at every optimization phase
• Unicode status symbols: ● OK, ○ applying, ◆ warning, ● error, ✦ tip
• Progress bars: ████░░░░ 75% during multi-adapter optimization
• Mode-aware ASCII art: ⚡Throughput / 💎LowLatency / ⚖Balanced
• Gradient text: per-character RGB interpolation (orange → gold)
• Unicode box sections: ╭── PHASE 1 ──╮ instead of ASCII +===+
• Pulse-dot animation during MTU binary search (~30s phase)

🆕 New NIC Vendor Patterns (16 added)

Intel ITR/Interrupt Throttle Rate, Killer GameFast/Stream Detect, Realtek Idle Power Saving/PCIe, Broadcom VMQ/SR-IOV, Gigabit Master Slave — all mode-specific

📦 What's New

• CHANGELOG.md (178 lines)
• .gitattributes (CRLF enforcement for .bat/.ps1)
• Updated README (compatibility, line count, one-liner fix)
• LICENSE year: 2025-2026
• 1733 lines (+279 from v3.0), 114-line .bat

⚠️ Dev Test Release

This is a development test release — 16 autonomous AI agents modified this code.
Thoroughly tested on Linux (dry-run analysis), but not yet tested on live Windows.
Please test on real hardware before production use.

v3.0 - Full English + Colorful UI + Bug Fixes

Highlights

• Full English translation - all user-facing strings, comments, prompts
• 7 colorful message types - [OK]/[+>]/[!!]/[XX]/[..]/[--]/[??] with distinct colors
• Multi-color startup banner with OS info + mode-based color coding
• 21 DNS providers in interactive menu (Speed/Security/Family/AdBlock/Privacy/EU/China)
• 3 optimization modes: Throughput / LowLatency / Balanced
• Detailed descriptions at every toggle so you know what's being changed

Bug Fixes

• MTU detection locale bug - was using 'Reply from' string match (English only). Now uses ping.exe exit code (works on Polish/German/Chinese/any Windows locale)
• DNS menu prompt now correctly mentions ID 99 (Reset to DHCP)
• Default Mode changed from ambiguous 'Max' to explicit 'Throughput'
• Multiple MTU targets (1.1.1.1 / 8.8.8.8 / 9.9.9.9) for firewall fallback

Compatibility

• Windows 8.1 / 10 / 11
• Windows Server 2012 R2 / 2016 / 2019 / 2022 / 2025
• PowerShell 5.0+
• x86 / x64

Quick Start

# Interactive mode (recommended for first run)
.\Optimize-NetworkAdapter.ps1

# Or just double-click Run-NIC-Optimizer.bat (auto-elevates)

CLI Examples

# Gaming preset for all Ethernet
.\Optimize-NetworkAdapter.ps1 -Mode LowLatency -All

# Full automation with Cloudflare DNS + telemetry off
.\Optimize-NetworkAdapter.ps1 -Mode Throughput -All -DnsProvider 1 -DisableTelemetry -Silent

# Rollback
.\Optimize-NetworkAdapter.ps1 -Restore

Stats

• 1454 lines of PowerShell
• ~50 functions
• 40 NIC settings, 24 netsh tweaks, 16 registry tweaks, 7 powercfg tweaks
• Validated: zero syntax errors

Reboot required after first run for full effect.