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SSAO creates input delay
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Description

Turning on SSAO no matter of quality (but higher quality makes the issue worse),
creates a noticeable input delay of mouse movement to view change (ingame, first person).

Details

Legacy ID
1859854140
Severity
None
Resolution
Open
Reproducibility
Always
Category
Performance
Steps To Reproduce

Go ingame, turn SSAO off and move the mouse around a bit.
Check if you experience any delay.

Turn SSAO on with its best quality, check for input delay again.

Additional Information

When looking around ingame, it is expected that moving your mouse left immediately makes the view go left.
A delay between input and output is very annoying and for example experienced in some games when turning on VSYNC.

With my current settings ARMA runs at around 60 fps and turning SSAO on or changing its quality has an effect on the fps in the range of 2 to 4, so overall bad performance should not be the root of this issue.

This issue is only present ingame, the mouse cursor in the menu is not affected.

CPU: AMD Phenom II X4 965
GPU: AMD Radeon HD 5870

Event Timeline

Bohemia edited Steps To Reproduce. (Show Details)Jul 17 2013, 6:57 PM
Bohemia edited Additional Information. (Show Details)
Bohemia set Category to Performance.
Bohemia set Reproducibility to Always.
Bohemia set Severity to None.
Bohemia set Resolution to Open.
Bohemia set Legacy ID to 1859854140.May 7 2016, 3:32 PM