[SPZ2-5918] [1.0.0-ALPHA5-RC1] Unpausing after editing a large wire circuit is slow

[vernal palm]

Building count: 1,011,545

[sage jetty]

Thank you for reporting this bug! Our team will review your report soon.
Feel free to add more details in follow-up messages — we're also scanning for duplicate reports automatically now.
📨 There are currently 20 reports awaiting team review. Due to the high volume, it may take a little longer for us to get to yours.

📋 Log files help us investigate issues. You can find yours here:
• Windows: %USERPROFILE%\AppData\LocalLow\tobspr Games\shapez 2\Player.log

💾 Savegame files (.spz2) are very helpful if relevant to the issue!
Export via Main Menu → Play → click the download icon on the relevant savegame.
You can also find them here:
• Windows: %USERPROFILE%/AppData/LocalLow/tobspr Games/shapez 2/

1. [SPZ2-3693] — 👀 62% similar

[0.0.9-rc4] Deleting wire grid causes game to freeze for 30 seconds
To Do • Priority: Low • Fix: 1.0 Release [1.0.0] • Game: 0.0.9-rc4

Deleting large Wire grids causes the game to freeze for approximately 30 seconds. The issue occurs when placing a Blueprint containing Wires, then right-clicking to delete it. The same freezing behavior was observed with Pipe grids on version 0.0.8, while Wire freezing appears to be newly introduced in 0.0.9 after refactoring. The stuttering also occurs when copying parts of Wire Crossings to duplicate them. The issue makes deleting large Wire or Pipe structures extremely slow and causes the ...
💬 Threads: [0.0.9-rc4] Deleting wire grid causes ga

2. [SPZ2-5314] — 👀 55% similar

Autosaves impacts gameplay when they happen at higher structure counts
Done • Priority: Medium • Fix: None • Game: 1.0.0-dev • Resolution: Won't Fix

Autosaves cause noticeable gameplay pauses when they occur at higher structure counts. The issue is triggered every 5 minutes during autosave with high structure and space platform counts, demonstrated with a savegame containing 616K structures. Each autosave creates an obvious pause that interrupts smooth gameplay. Players expect to play smoothly even when autosaves occur. The issue was closed as won't fix, with the suggestion to increase autosave interval time.

3. [SPZ2-5864] — 👀 50% similar

Larger saves have really long save times for alpha 4+5 (3+ hours for 1.4million structural units)
To Do • Priority: Critical • Fix: None

Large savegames with over 1 million structural units are taking 3 or more hours to load in alpha 4 and 5, whereas this was not an issue in alpha 3. The problem is triggered by importing and loading a save file of that scale from the play menu. The expected behavior is that savegames of this size should load in a reasonable amount of time without such extreme delays.
💬 Threads: [1.0.0-ALPHA5-RC1] Loading saves is very

4. [SPZ2-2882] — 👀 48% similar

Loading time is extremely slow with ~450k buildings
Done • Priority: Highest • Fix: 4 - Early Access • Game: 0.0.0-alpha22.4 • Resolution: Done

Loading time for savefiles with approximately 450,000 structures is extremely slow, taking around 4-5 minutes to complete. The performance issue was suspected to be caused by quadratic scaling in the loading algorithm. This significantly impacts players with large factories, making the game difficult to access. The issue has been verified and fixed, with loading time improved by roughly 40% through linear scaling optimization.

5. [SPZ2-4786] — 👀 45% similar

Big savefiles have very long loading times and cause the game to freeze if it's minimized while loading
To Do • Priority: Medium • Fix: 1.0 Release [1.0.0] • Game: 0.1.1

Large savegames with over 500,000 structures experience very long loading times in shapez 2. When the game is minimized during loading in borderless mode, it appears to freeze and may show a "stopped working" error message, though it will eventually load if given enough time. The loading widget stops spinning during longer loads, making players think the game has crashed. Testing showed that loading times have increased in newer builds, with borderless mode taking significantly longer when fo...
💬 Threads: [0.1.1][Windows] Freezes when quitting

6. [SPZ2-2666] — 👀 42% similar

game becomes unplayable with 5k buildings (placing takes 1 second)
Done • Priority: Highest • Fix: 4 - Early Access • Resolution: Done

shapez 2 becomes unplayable when the player has more than 5000 Structures built in their save. When this threshold is exceeded, Placement of a new Structure takes approximately 1 second to complete, making the game extremely slow and frustrating to play. This performance issue severely impacts late-game gameplay where large factories require thousands of Structures. The root cause is related to how the Simulation handles building calculations, and switching to a Clusters-based system resolves...

Found 6 similar reports • Searched 3,162 reports • Use /check-duplicates to recheck

[twilit acorn]

Can you supply me with a save that is similar to the one you had that problem on?

[vernal palm]

I'll see if I can find one.

[sage jetty]

✅ Thank you for providing further information, our team will have a look again!

[sage jetty]

💾 Pause Bug

⚠️ Cheats Used — results may differ from normal gameplay

Version

1.0.0-alpha5-rc2

Scenario

Classic - Regular

Seed

0

Research

100%

Buildings

219,373

Completed

Yes

[vernal palm]

The duration is not a long as the other save but it should load quick. Can always copy paste the platforms to make the circuit bigger.

[sage jetty]

🎫 Many thanks for reporting this issue! We have created an internal ticket for further investigation and will keep you updated. The internal ticket ID is SPZ2-5918 for reference. If you want to provide further information, just comment on this thread.