Technical support > Bugs in stable version (2.5)

Smoke grenades rape framerate

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Charlie:
Smoke from smoke grenades drops my framerate to an unplayable level, from 50fps to 6fps.


Tested on head (8a9c7289efef39c966ba79b3183ba4806689f6d0 at time of writing).



GPU: GeForce GTX 285M
CPU: Intel Core i7 820QM
RAM: 2 x 4GB SODIMM 667MHz
nvidia-drivers 310.19


This is an old issue, this thread states that it was fixed, but clearly its not.

H-Hour:
There is a fix attached to this post.

Charlie:
The change has not been committed so I don't know why that thread is marked "fixed", and its a bad idea to tell users to overwrite a file with an attached one in a locked forum as this file will get out of synch with the repository and potentially break other things. All that is needed to work around the issue is to change one word, as I outlined in this post.

H-Hour:
It's a known issue but only effects slower machines (mine included). There are other issues with that particle, not just the physics one, so it will have to be looked at and tweaked before 2.5 goes out. The one-word change is good for performance, but there are advantages to having the smoke particle use physics. For that reason, another solution might be found. The file is just a temporary measure you can use until a fix is made.

ShipIt:

--- Quote from: H-Hour on December 13, 2012, 11:41:41 pm ---... but only effects slower machines ...

--- End quote ---

This makes an Intel i5-3450 a slow machine per definition.  :D

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