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AI Sign List slowdowns the more signs there are #7303

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SamuXarick opened this issue Mar 1, 2019 · 2 comments
Closed

AI Sign List slowdowns the more signs there are #7303

SamuXarick opened this issue Mar 1, 2019 · 2 comments

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@SamuXarick
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@SamuXarick SamuXarick commented Mar 1, 2019

Version of OpenTTD

1.9.0-beta3

Expected result

no stalls

Actual result

stalls each time a sign is added or removed from the sign list

Steps to reproduce

Have an AI that masses add and removal of signs, like AIAI with all debug signs options.
Open Sign list.
Experience it slowing down the more signs it creates.

Savegame has about 61700 signs created by AIAI.
Sarnton Transport, 1962-08-19.zip

@SamuXarick
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@SamuXarick SamuXarick commented Mar 1, 2019

sarnton transport 1961-08-26

@James103
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@James103 James103 commented Mar 1, 2019

Based on the above image, it takes about 58 microseconds (barring all other graphics routines) to render a sign in the sign list. Also, it appears the simulation rate is capped at the graphics frame rate if the game is not in fast forward mode.

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