HOI IV | Open Beta SE™ Update 2

Generals!Hello, I’m Pdxen, Tech Lead for Hearts of Iron and I want to welcome you to the second update of the Summer Open Beta. In this update we are changing the topic from balancing to updating the tech stack of the game.A lot has happened with computers since Hoi4 was released. Back then, new CPUs used to have 4 cores and around 8 hardware threads, and all of those cores were heterogeneous. All but the lowest end CPUs have more cores and hardware threads today, and not necessarily homogeneous cores anymore. In this update we’re updating the threading libraries used in HoI4, with the aim to improve performance on some machines. Considering the fundamental change with this update and the wide variety of machines that people are playing the game on, we appreciate your help to verify that there is no unforeseen deterioration for specific hardware configurations before we push the changes live for everyone.In addition, we made some MP hardening to host operations such as kicking and banning players in MP, to prevent some of the malicious interactions that you have reported on the forums.Thanks for reading, and for helping us make the game better./PdxenHello, I’m Zwirbaum, Game Designer for Hearts of Iron, and I want to add that I’m back from vacation. We’ve gotten a lot of feedback (on behalf of our game designers: thank you, we appreciate all the feedback) . While this week's update will not contain any of the balance changes, or new ‘experimental’ changes, they will resume in the very near future. Until then, farewell!/ZwirbaumPATCH NOTES Updated the threading libraries used in HoI4 to work better for some more modern hardware configurations Increased MP hardening to host operations such as kicking and banning players in MPHow to join this Open Beta:This beta client is Operation Postern v1.19.2.0.910f (b554)To install Open Beta client, follow the instruction below:Right-click the game in your librarySelect Properties from the drop-down menuSelect Game Versions & BetasSelect the beta branch called open_betaIf you are already on the Open Beta client, you should get an update automatically.Finally, to report any issues you find, in relation to this beta, please use the bug report forum and make sure to include the version you’re using. That way our Jira won’t go nuts trying to figure out what bug report belongs to what.

Aug 12, 2026 - 21:31

Generals!

Hello, I’m Pdxen, Tech Lead for Hearts of Iron and I want to welcome you to the second update of the Summer Open Beta. In this update we are changing the topic from balancing to updating the tech stack of the game.

A lot has happened with computers since Hoi4 was released. Back then, new CPUs used to have 4 cores and around 8 hardware threads, and all of those cores were heterogeneous. All but the lowest end CPUs have more cores and hardware threads today, and not necessarily homogeneous cores anymore. In this update we’re updating the threading libraries used in HoI4, with the aim to improve performance on some machines. Considering the fundamental change with this update and the wide variety of machines that people are playing the game on, we appreciate your help to verify that there is no unforeseen deterioration for specific hardware configurations before we push the changes live for everyone.

In addition, we made some MP hardening to host operations such as kicking and banning players in MP, to prevent some of the malicious interactions that you have reported on the forums.

Thanks for reading, and for helping us make the game better.

/Pdxen

Hello, I’m Zwirbaum, Game Designer for Hearts of Iron, and I want to add that I’m back from vacation. We’ve gotten a lot of feedback (on behalf of our game designers: thank you, we appreciate all the feedback) . While this week's update will not contain any of the balance changes, or new ‘experimental’ changes, they will resume in the very near future. Until then, farewell!

/Zwirbaum

PATCH NOTES

Updated the threading libraries used in HoI4 to work better for some more modern hardware configurations
Increased MP hardening to host operations such as kicking and banning players in MP

How to join this Open Beta:

This beta client is Operation Postern v1.19.2.0.910f (b554)

To install Open Beta client, follow the instruction below:
Right-click the game in your library
Select Properties from the drop-down menu
Select Game Versions & Betas
Select the beta branch called open_beta

If you are already on the Open Beta client, you should get an update automatically.

Finally, to report any issues you find, in relation to this beta, please use the bug report forum and make sure to include the version you’re using. That way our Jira won’t go nuts trying to figure out what bug report belongs to what.

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