Latest update July 8 2014 broke BF4 Multi GPU on Mantle.

Even DX11 FPS has dropped and averages 80-70fps barely gets to 120fps, luckily DX11 doesn't suffer from the memory leak like Mantle after the latest July 8 patch so I can al least play on DX11 even though the frames are much lower than I normally play on my 120Hz monitor and $5000.00 plus PC!.

I have lost so much performance on the last patch it's not funny. Mantle is so awesome and was performing so great, I don't know why you guys messed with it.

All my friends have given up on you guys and I wonder what am I doing expecting things to get better.

It's always half a step forward and three steps back. I won't even hold my breath wating for a reply, I have purchased 2 BF4 accounts with premium, same with BF3 on PS3, I was a HUGE Dice fan, I still have some hope that things can turn arround even though everyone I know has given up and moved on.

Wow you tell us to come here about technicle issues and such a game breaking bad patch regarding Mantle Crossfire and not even a reply! Or oops we will fix that asap, sorry about breaking that but we are working on fixing that. But no nothing of the sort.

What will it be months before it's fixed or even acknowledged?

Same here...dual 7900's (Crossfire).  Running beautifully before...now hits 40-60 fps.  I go back to DirectX, same thing...

Frustrating

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@S0j00 wrote:

Same here...dual 7900's (Crossfire).  Running beautifully before...now hits 40-60 fps.  I go back to DirectX, same thing...

just tried one card seemed great, had a constant 90-105 FPS had to play at 100% res ☹️ Played one and half rounds then it froze on me, it was extremely smooth though on DT 🙂 

I'll try more tomorrow to make sure it's fine but it's looking good for one card!

Same problem and i have been trying to get help with it for over 2 months. I only run 1 290 with a 8350. But i all so get mantle BSOD problems and so on. I spend more time trying to fix this than actually playing and im starting to think we should be charging EA for our frigen time. Fix your **bleep** cause the stuff up is REAL. Very annoyed and if this isnt fixed i want a refund at the very least. I went out and got all new hardware and my old Ddr2 stuff seems to run better than any of this mantle crapola. Very pissed off. 

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@WarHawk24 wrote:
I have same problem with every map i tried and with the new Dragons maps also. For me the game start very well, i have 2 x R9 290x so at all ultra and the last 3 video seting at OFF i am in the range of 160 to 200 FPS. After 5-10 min i am down to 100-120fps then it get to under 80 fps by the end of the game. PPL will say 80 fps is good, yes it is, but not when you have a 144hz monitor and a setup that should always stay over 144fps. The game does not feel good at all under your monitor refresh rate. It all started for me after 8th July patch... Game was running very good before never drop below 150 fps.

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Do you getthe memory leak as well and then it starts lagging. One that happenes it's impossible to play, it might say 40-50 fps but you can tell it isn't even displaying that. When it's lagging many frames are missing it feels more like 15 fps.

I found a solution for now, turn off Crossfire and it's ok. My frames stay on 90-115 on Ultra at 120Hz sometimes reaching my maxvariable limit at 120 fps on one 290x running Mantle, this is on the Dragons Teeth maps too.

The last patch broke crossfire running Mantle, turn one GPU off you you will get great performance. Dice, EA hurry up and fix this and in the process don't break single mantle GPU because if you guys can't getit to here it was before at least we can uwse one card. DX on AMD is performing horribly since the last patch specially on the dragons teeth maps frame drops to 55-60 but luckily no memory leak.

If you guys did your job and replied to my tweets or this post you could have told me to try turning off Crossfire!

Fix this ASAP i can no longer play at 135% resolution and get 120 fps. I plan to get the ASUS swift wich needs about the same perfomance even a bit more, so fix my $750 paper weight!

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@WarHawk24 wrote:
I have same problem with every map i tried and with the new Dragons maps also. For me the game start very well, i have 2 x R9 290x so at all ultra and the last 3 video seting at OFF i am in the range of 160 to 200 FPS. After 5-10 min i am down to 100-120fps then it get to under 80 fps by the end of the game. PPL will say 80 fps is good, yes it is, but not when you have a 144hz monitor and a setup that should always stay over 144fps. The game does not feel good at all under your monitor refresh rate. It all started for me after 8th July patch... Game was running very good before never drop below 150 fps.

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....this is what's happening, did you notice a memory leak as well?

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@HelIraiser wrote:

Same problem and i have been trying to get help with it for over 2 months. I only run 1 290 with a 8350. But i all so get mantle BSOD problems and so on. I spend more time trying to fix this than actually playing and im starting to think we should be charging EA for our frigen time. Fix your **bleep** cause the stuff up is REAL. Very annoyed and if this isnt fixed i want a refund at the very least. I went out and got all new hardware and my old Ddr2 stuff seems to run better than any of this mantle crapola. Very pissed off. 

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Your problem might be from bad optimisation for your CPU, EA and DICE needs to optimise better for AMD CPU's.

With one 290x and 4770k mantle is fine but crossfire is broken and can't use it. Before the patch it was about double the performance of one card and ran perfectly, you mess with perfection you break it.