Diablo® III

Performance Issue : FPS drop 30 => solution

Hi all,

Some people find solution to solve framerates drop when vsync is enable.

Blizzard solution :


Vsync: Vsync stuttering is normally caused by a machine being unable to maintain 60fps, falling behind and then alternating between 30fps and 60fps. When this is the cause, the player may want to limit the frame rate to 30fps, or reduce system and graphical settings. Ongoing optimizations by the developers will also help on this front.


Disabling VSYNC is not a suitable answer ...

Found solution : http://eu.battle.net/d3/en/forum/topic/4209821326?page=3

Using D3DOverrider(Riva tuner) will force Triple buffering + VSYNC => no more frame rate drops at 30 fps.

Dear blizzard developers : to solve this issue enable triple buffering when vsync is enable.
Why ? 1 buffer on the screen, 1 wait for VSYNC and 1 used by GPU to render next frame... quite simple ?!

Here the test I done to repoduce the issue and check the solution work. I use fraps to monitor FPS.

1°) VSYNC off
2°) I go to act 1 old ruins
3°) If I stay idle 65 fps. I put my mouse on waypoint => 58 fps. (due to glow effect) (*)
4°) I enable VSYNC in diablo
5°) idle => 60 fps, my mouse on waypoint 30 fps (double buffering issue 1 buffer on screen, 1 buffer wait for vsync => GPU cannot render)

(*) find a place where framerates goes below 60 fps.

Then I use D3DOverrider and force Triple buffering (forcing triple buffering in NVIDIA settings does not work I don't know why)

1°) VSYNC is OFF
2°) I go to act 1 old ruins
3°) If I stay idle 65 fps. I put my mouse on waypoint => 58 fps.
4°) I enable VSYNC in diablo
5°) idle => 60 fps, my mouse on waypoint 58 fps => SOLVED !

Hope it helps you to fix this issue.
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Can we please stop blaming the customers and get a fix for what is obviously Blizzard's issue?
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Bug report : http://us.battle.net/d3/en/forum/topic/6368648176
Edited by PouPouille#2335 on 8/20/2012 11:35 PM PDT
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