Stu MSD

Have checked the config files, seems to be set to 120.

Thanks mate, will try it as soon as i get home. :D

Indeed it does when you use all 3 which is why the scaling isnt linear, however, the Asus Maximus Extreme ROG board I use will scale 2 cards at PCIx16 IIRC which is why my Crossfire scaling is usually better than my trifire scaling but regardless, x 8 isnt much slower than x16 in reality, certainly not on a 7970... in fact, believe it or not, x4 isnt much worse either. We simply arent utilising x16 at all yet with the current GPU architecture and nothing can change the fact that the CPU itself only has 20 PCIE lanes. As soon as the new architecture is out I will upgrade as I want QuadFire but I wont do it until the architecture is out and stable to support it as at the moment the limiting factor with Gen 3.0 is actually the CPU's as Intel simply dont support it. put simply, the more devices you have on the bus, the greater the capacitive load and the more chance of signaling issues. The desktop Intel CPUs are known to have such problems with Gen 3 and, whilst some are better than others in Gen 3 mode, its still a lottery. Theree are good boards out there that are Generation 3 compliant, but if you've got a CPU that struggles with its layout because the margin on the PCIe bus (CPU side) for signaling is small, there's nothing you can do but use Gen 2 mode at the moment. Anyway... I digress. LOL

I can only compare what I have, and the DX11 version looks incredible to me. Admittedly, the normal version is probably not quite as good as DCS although obviously on my system is playing a lot smoother.

Thanks mate, Thats why I went to the effort of being quite detailed about my system as tech support forum advice always tends to follow the same path. I still appreciate each and every members advice though as it allows me to quickly build a picture of what aspects are the biggest rescource hog in this engine. The cards are all bolted together underwater so taking one out isnt an option sadly, but disabling Xfire as I have done in the examples early "should" do the same job. Its a bit disheartening really as I really want to jump in and learn how to play these properly and invest in some more plugins like the Helicopters, but I dont want to do it if its going to run badly as it does now. I want the eye candy, rightly or wrongly, as thats why I have invested in the system that i have... Even really heavy games like Skyrim run at 200+FPS on this system, in fact, even the dreaded 64 player maps on BF3 are pulling 170+FPS. (naturally anything over 120fps is pointless on my system anyway- but Vsync set at 120 is nice.)

Hi, HT shouldnt be "costing" performance nowadays and I really dont want to have to go into my bios to play 1 game. I will ry it though, for feedbacks sake. :) I just use the Quick Action option and choose the F15 dogfight.

Ok, here are the results of a quick run. (The above image is the summary spreadsheet) CPU overall max usage 20%, but more importantly, the 2 cores in use peaked at 67%. 6+GB of spare ram too... so whats slowing it down I have no idea. Ah I see, I just have it set to 3 screens so one big image that moves with my head. havent tried any of the other options yet.

Thanks mate, will do some more testing, and plot CPU performance while I am at it. Yes, but my phone drops all images directly onto my server and allows me to link them at any res I link, no messing about uploading images from the PC first. ;)

Hi, Thanks for your reply? Sorry, not sure what you mean by one camera or three? Where is that setting and what is it for? No - I dont have mirrors checked, just mini HUD. Understand the CPU is far more tasked than in HAWX as that is after all just a shoot em up. My test was purely to show what my graphics setup can do, and a 3770K at 4.4ghz is hardly going to struggle compared to most peoples so I shouldnt be limited there either as I read of people on here with 50+FPS... it cant be totally CPU limited surely?

Ok, had a play around on 1 GPU and have got at least "Playable" results with it set like this: FPS are up in the low 40s now. I would still appreciate any help to find the issue as the settings shouldnt need turning down to get a decent frame rate, so there is a conflict somewhere... just need to figure out where.

Just set everything to low and a 4400 screen res. Result - 39fps! :(

Hi, I leave CCC absolutely standard as it installs out of the box as its a requirement for some of the benchmarking programs I use and it generally works just fine on anything unless I need to force alternate frame rendering for the Xfire or something. If you guys have a set of settings that work well I will create a profile for it that auto launches when i fire up DCS. Just hoping you guys can save me a lot of triaol and error with your experience and of course kindness. :)

Hi, thanks for taking the time to reply. No I havent mate, just that one so far. Full screen then just vtapped the "high" button at the bottom so it auto configured it for me. Just going to make a brew then will browse around and do just that. :)

No - Topics like this tend to spend the first 20 replies with people blaming hard drives - ram - GPU's - overheating - the list goes on. I just want my problem to be as detailed as I can make it so we can move forward with a solution before I give up and just ask for a refund which I dont want to do as I have wanted to get into some serious sims for years and just never had the time due to working 4 jobs for the past 12 years... now I have it nailed down to just 3 :D Most of its just copied and pasted form the OC forum I use every day - for ease. Sorry if its somehow caused offence. :(

Ok, So fired up DCS and configured everything to high. Result = horrendous. Did some googling to find out how to display framerate direct from the rendering engine and got some screenshots. This is with 3x 7970's enabled. This is with 2x 7970's enabled. This is with 1x 7970 enabled. So thats the best it gets. 11fps average with totally negative X-Fire scaling? As a point of interest, I fired up HAWX 2, a graphicaly far superior game I am sure you will all agree. And I ran its internal benchmark with the same set of rules. Everything to max, 3, then 2, then 1 GPU. Results as follows. 3 GPU's 2 GPU's 1GPU: So as you can probably understand, I am very dissapointed with the performance of DCS so far, considering how much it cost me to find the originbal lock on, then all the downloading and extra cash to upgrade it to DCS world then FC3. :( Would really appreciate any advice anyone can give. If we can get her up above 30FPS at least it will feel fluid, although still a kick on the balls on my system. :(