High spec PC still lagging

ajjcon · Sep 22, 2015

Hi all, I finished building my new PC in the past month but im still getting lagging issues in some games, especially older ones. Playing COD4 MW for a bit of mindless fun and the game lags ever 10-15 seconds skipping frames. It doesnt even seem to be in heavy load sections of the game and the PC is definitely not under stress. Playing the game on Max settings and using ROG Swift monitor with settings set to match.

i7 4790k (oc'd to 4.7ghz stable - also same result at stock)
16GB Corsair Dominator Ram
Maximus VII Fromula
H100i cooler (Running 27c idle and 35c in game)
2 X Asus GTX 970 in SLI
Rog SWIFT 27 Monitor set to 144hz in game with v-sync enabled and then disabled....

I know its not the spec and I know its not an in game setting becuase ive testing everything on/off and in different combinations. Any suggestions?

eggbrook · Sep 22, 2015

What PSU are you running? Cheaper PSUs don't necessarily output the same voltage consistently and if it dips your graphics cards in particular can lag

thently · Sep 22, 2015

Have you tried taking 1 of the 970's out or turning off SLI? Some games act weird with SLI and actually get lower performance.

Thent

ajjcon · Sep 22, 2015

eggbrook :

Running an ax860i couldn't get cleaner than this !

ajjcon · Sep 22, 2015

Took out 2nd gtx, tested, no change swapped the gtx card that was left in in case it was a faulty card and still no change :/

thundervore · Sep 22, 2015

Have you tried setting your monitor to 60Hz?

I do not believe those old games are build for 144 Hz

ajjcon · Sep 22, 2015

That's actually 1 thing I haven't tried, I took it that if the option for 144hz was in game it would be fit to run it. I'll test it and let you know

UPDATE: NOPE this made no difference....

13thmonkey · Sep 22, 2015

they'll run as a fast your hardware can, halflife 2 can run at 200+ . What are you gpu temps? what do the GPU clock speeds do when this happens, do they stay constant or drop, does the FPS actually drop (according to precision X or similar), what does the CPU frequency do during these events.

ajjcon · Sep 22, 2015

13thmonkey :

Heres an interesting thing, run GPU Tweak and monitored the game for the lag and for some reason GPU Usage drops to 0 in the moments of a lag. runs around 50 - 60% hits a lag and drops to 0........ I have no overclocking on the gpu and its stitting stock

http:// - SCREEN SHOT OF GPU TWEAK

13thmonkey · Sep 25, 2015

so what does the cpu do at that time, my bet is it hits 100%, and that something else is using that power and not the game.

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High spec PC still lagging

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