dolphin 4.0 for linux with poor performance

[killown]

dolphin for linux has been decreasing the performance as it releases newer versions. it was having in zelda twighlight 26-28FPS in the hyrule field and now it dropped in the same area for 11-13 FPS (using the same configuration as before).
I would like to know what has been changed since dolphin 3 that did the linux version 4.0-715 have so poor performance?
very very poor performance, the game was playable and now it's unplayable.

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I think I found it, maybe it's a bug in the interface where it was supposed to enable dual core support but the box checked is not enabling it, that explains why it dropped the performance to half

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the config interface has a weird checkbox, it has 3 options, grey, blue and checked, now it's using two cores but even so 13-14 FPS... any linux developer messing up with dolphin?

[Anti-Ultimate]

As Dolphin is getting more accurate, it needs more powerful hardware to play fluently. Your Phenom is too old to do that job

[delroth]

Also, use the latest development version, and upgrade your nvidia drivers.

[degasus]

We have dropped the ztp speedhack because it is incompatible with another optimization, so there is a major performance issue in ztp.

[Toxicshadow]

Also worth noting that the vertex streaming hack was dropped.

You may get a performace boost by using an nvidia driver greater than version 331.21 as it enables "buffer storage" support.