Very Stuttery Performance on this PC I just built

ExypnosSauce · Aug 19, 2016

Pretty much the PC stutters badly when I play certain games. The FPS will stay constant but the game will slow down and then speed up. I noticed this while I was running some 3DMark benchmarks that yes indeed, the timer in the bottom was slowing down and then speeding up. It's very choppy and makes some games unplayable, I notice this more on DirectX games. My system is an AMD FX-9370, MSI R9 390X, MSI 990FX motherboard, 16GB of Crucial Billistix, a Sandisk SSD, and a 750W PSU. Temps are fine and every driver is up to date. Any suggestions?

CTurbo · Aug 19, 2016

It has to be that ridiculous 220w cpu. Those things are nothing but trouble. Seriously. Downclock your cpu to 4.0ghz and I bet your issues vanish.

ExypnosSauce · Aug 19, 2016

Kinda worried to do so, I don't want my R9 390X to bottleneck.

CTurbo · Aug 19, 2016

Well you already are not getting the results you feel you should be right? What's the harm?

TerryLaze · Aug 19, 2016

Monitor your CPU clocks while gaming/benchmark and not temperatures,temps will always stay within the safe margin and this happens by lowering the clocks of the CPU.

This could be just a wrong setting in the BIOS but it could just as well be a problem with the PSU/mobo/cooler or whatnot.

ExypnosSauce · Sep 27, 2016

CTurbo :

I can't go any lower than 4.1GHz thanks to my motherboard. And still, it's the same.

Supernova1138 · Sep 27, 2016

How are you cooling your CPU? The 9000 series FX CPUs pretty much require a 240mm closed loop water cooler, so if you're trying to cool it on air or a cheaper 120mm closed loop cooler you could be overheating, causing poor performance. You might want to check CPU temperatures with AMD Overdrive.

ExypnosSauce · Sep 27, 2016

Supernova1138 :

It's a Corsair H80i v2, REALLY thick 120mm water cooler. Processor is always below 40°C, temps and cooling are not an issue.

Supernova1138 · Sep 27, 2016

Okay, it shouldn't be running that cool, indicating it's having trouble maintaining full load clockspeeds. Exactly which MSI 990FX motherboard do you have and is the FX 9370 on its CPU support list?

ExypnosSauce · Oct 9, 2016

Supernova1138 :

MSI 990FXA, and yes I checked multiple sources and the FX-9370 is supported just fine. I guess with the cooling thing I should set a target temp? What would that target temp be?

hamster3 · Oct 9, 2016

How many FPS you getting? What's your monitor refresh rate? By slowing down and speeding up do you mean frame timings? Tried RTSS to limit the frame rate?

ExypnosSauce · Oct 9, 2016

My monitor refresh rate 60Hz (2x Acer G226HQL) and I don't know how else to describe it other than stuttering. I am going to make a video about it today and post it here so you can see for yourselves because I'm so closed to just tossing this PC in the trash. Frames will stay consistent but there is stuttering.

hamster3 · Oct 9, 2016

Sounds like frame timings, try RTSS.

ExypnosSauce · Oct 9, 2016

Here, take a look at this. It's a bit difficult to catch on video but here's when it's most noticeable.
https://www.youtube.com/watch?v=wsVNiCmv9-k

ExypnosSauce · Oct 9, 2016

hamster3 :

If it's poor frame timing, how do I go about fixing it? What is RTSS?

Supernova1138 · Oct 9, 2016

RTSS is RivaTuner Statistics Server, it allows you to setup framerate caps for your games which can be helpful if you're getting really inconsistent performance with an uncapped framerate. I can't really see anything wrong in the video except maybe a slight hitch at one point.

ExypnosSauce · Oct 10, 2016

Guys... I turned off MLAA is all of my games and the stuttering is pretty much gone. For some reason MLAA causes poor frame timing. If you're experiencing something similar, disable MLAA.

Very Stuttery Performance on this PC I just built

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