4.0-5971 massive slowdown in SSX3

[Interstellar Overdrive]

Hi everyone!

First of all: Really great piece of software! Thanks for all the hard work.

Onto the "problem" (not really a problem just something to keep track of):

In 5964: internal res. automatic, AF 16, per pixel lighting, AA 8x - steady 60fps

In 5971: same settings... in menus - 60fps, in-game - drop to 30 fps or less, sound gets slow

Game gets unplayable.

Workaround: Lower AA to 4x or 2x


So this commit seems to increase the GPU load drastically, at least in SSX3. I tried a couple of builds after 5971. They all suffer from the same behaviour (also the most recent one - 6008 as of this writing).

I only play SSX3 atm. No idea if other games are affected or if this is known to the developers or even intended behaviour.

If not: I hope this helps.


Keep up the good work!


My rig: i5 3570k, GTX 560, 8 gig RAM, SSD

[JMC47]

I can't reproduce any issue in SSX Tricky. These are variable framerate games, so it could be due to them wanting to run at 30 fps at Native CPU clock.

[Interstellar Overdrive]

Thanks for checking. I appreciate it.
But SSX Tricky is not SSX3. Also: Your GPU (GTX760) is much stronger than mine (GTX560).
So you may not notice the problem at all. I wouln't notice it at 4x AA either. I just noticed it, because I was not able to run SSX3 at 8xAA anymore (which is not at all a problem for me).
But lost emulation speed within one commit is something I decided to report since it may have bigger impact on other games.  

I checked the dev thread for commit 5971 -"Block gpu thread"- and they were also talking about slowdowns but thought they had solved it.

Edit: Interesting - between 6008 and 6025 the behaviour has changed a bit:
Now I still have the slowdowns in 8x AA but while I had 4fps to 30fps in 6008, now I get 20 fps to 50fps in 6025 (I always check the same save).