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Restart your game and verify that Patch 1.4 is installed before retesting VOIP or Recon marker issues.
OFFICIAL UPDATE · SEP 2, 2026
Hell Let Loose Vietnam Patch 1.4 Full Changelog
Patch 1.4 is now live for Hell Let Loose: Vietnam, bringing around 200 fixes and improvements. Official notes highlight resolutions for distorted robotic Proximity Chat and persistent Recon/Flare markers, DLSS 4.5 support with 5x/6x Frame Generation, Career Level reset protection, and broad gameplay, vehicle, tunnel, and UI improvements.
Prior full changelog · released September 2 · Reviewed Oct 8, 2026
QUICK ANSWER
What changed
Patch 1.4 is now live for Hell Let Loose: Vietnam, bringing around 200 fixes and improvements. Official notes highlight resolutions for distorted robotic Proximity Chat and persistent Recon/Flare markers, DLSS 4.5 support with 5x/6x Frame Generation, Career Level reset protection, and broad gameplay, vehicle, tunnel, and UI improvements.
SOURCE STATUS
Prior full changelog · released September 2
This page summarizes the named publisher announcement. Use the original post for its complete wording and any later edits.
Open Patch 1.4 | Full ChangelogCONFIRMED IN THE ANNOUNCEMENT
Key changes and facts
- Resolved the main VOIP issue where Proximity Chat could become distorted or robotic, developed in partnership with Epic Games.
- Implemented a targeted fix that developers believe addresses instances where persistent Recon Plane and Flare enemy markers remain visible on the Tactical Map for longer than intended.
- Added support for DLSS 4.5, including 5x and 6x Frame Generation options for supported Nvidia 50 series hardware.
- Added additional safeguards protecting against Career Levels unexpectedly resetting to Level 1.
- Tactical Map and spawning: Resource Node radius is now shown on the 3D Tactical Map, Tunnel travel displays travel time, connection messaging is improved, walking through blueprints no longer blocks construction, and Commanders can place abilities over spawn points.
- Controls and vehicles: separated aiming and vehicle helicopter inversion, added Toggle ADS support to helicopter gunner seats, and improved mouse rebinding and keybinding saves.
- Gameplay QOL: downed players drown correctly underwater (preventing the 6s timer stall), players can no longer interrupt a Medic reviving by attempting to drag, and Satchel placement/activation on constructibles is improved.
- Stability & environment: removed a skeletal skinning component that caused crashes during gore and blood splatter instances (not AMD-specific), alongside 100+ map and environment fixes across terrain, collision, clipping, LOD, and water surfaces.
WHAT PLAYERS SHOULD DO
Use the update without relying on stale advice
Check 2
Test Proximity Chat in-game; if brief stutter occurs during menu open/leave transitions, note that edge case is separate from the resolved prolonged robotic voice.
Check 3
If gunfire or explosions sound muffled or echoey, treat that as the separate post-1.3 audio investigation, not the Proximity Chat fix.
Check 4
If using an Nvidia 50 series GPU, check the new DLSS 4.5 and 5x/6x Frame Generation settings in Video options.
Check 5
If keyboard input locks up while mouse works, use Shift + F3 to open and close the Epic Games overlay as a temporary workaround pending an EOS update.
Check 6
Recheck helicopter and vehicle controls in Settings to take advantage of the separated aiming and vehicle inversion options.