[2.0.65] Freeze closing map view with Py suite + LTN
Posted: Wed Aug 27, 2025 10:57 pm
TL;DR
Regression between 2.0.64 → 2.0.65: closing the map view consistently freezes for ~30s in a large Py+LTN save (~1400–1800 stations). Opening the map is instant. Debug shows a huge “Update” spike. Save + log + screenshot attached.
Description
On version 2.0.65 experimental, closing the map view consistently freezes the game for ~30 seconds before resuming.
Opening the map is instant and works normally; only closing triggers the freeze.
This issue did not occur on 2.0.64 with the exact same mods and save.
I also tested on a 2-week old backup save (~1500 stations instead of ~1800). The same freeze happens when closing the map view in 2.0.65. This confirms it’s not caused by recent base expansion or a bad station setup — the issue appears even on an older, stable version of the same factory.
During the freeze the FPS counter drops sharply, then returns to 60 as soon as the game unfreezes.
Also happened on the main menu background simulation until I disabled that option in settings.
Steps to reproduce
Launch Factorio 2.0.65 with Py suite + LTN enabled.
Load a large save (~1400–1800 LTN stations).
Open map view (works normally).
Close map view → freeze for ~30s.
Expected
Closing the map should return immediately to gameplay.
Actual
Game hangs for ~30s with CPU usage dropping to near zero, then resumes normally.
Notes
Removing GUI-heavy mods (Helmod, LTN Manager, Bottleneck Lite) does not resolve the issue.
Debug show-time-usage shows one massive spike in Update (~282s) and smaller Lua spikes from LTN (~1.5s).
Happens even on a 2-week old backup save (~1500 stations), so it’s not from recent expansion.
Hardware: i9-14900K, RTX 5090, 32 GB RAM.
Regression between 2.0.64 → 2.0.65: closing the map view consistently freezes for ~30s in a large Py+LTN save (~1400–1800 stations). Opening the map is instant. Debug shows a huge “Update” spike. Save + log + screenshot attached.
Description
On version 2.0.65 experimental, closing the map view consistently freezes the game for ~30 seconds before resuming.
Opening the map is instant and works normally; only closing triggers the freeze.
This issue did not occur on 2.0.64 with the exact same mods and save.
I also tested on a 2-week old backup save (~1500 stations instead of ~1800). The same freeze happens when closing the map view in 2.0.65. This confirms it’s not caused by recent base expansion or a bad station setup — the issue appears even on an older, stable version of the same factory.
During the freeze the FPS counter drops sharply, then returns to 60 as soon as the game unfreezes.
Also happened on the main menu background simulation until I disabled that option in settings.
Steps to reproduce
Launch Factorio 2.0.65 with Py suite + LTN enabled.
Load a large save (~1400–1800 LTN stations).
Open map view (works normally).
Close map view → freeze for ~30s.
Expected
Closing the map should return immediately to gameplay.
Actual
Game hangs for ~30s with CPU usage dropping to near zero, then resumes normally.
Notes
Removing GUI-heavy mods (Helmod, LTN Manager, Bottleneck Lite) does not resolve the issue.
Debug show-time-usage shows one massive spike in Update (~282s) and smaller Lua spikes from LTN (~1.5s).
Happens even on a 2-week old backup save (~1500 stations), so it’s not from recent expansion.
Hardware: i9-14900K, RTX 5090, 32 GB RAM.