Games sututtering since I installed GPU

Hey, first of all, pardon my English. I have been playing videogames on the same PC for the last 3-4 years.

OS: Windows 10 Pro (v. 1703).
CPU/GPU: AMD a10-5800k APU with Radeon 7660d (CPU + integrated GPU). 4.30 GHz
MB: ASUS F2 A55-M
Memory: 4+4 GB Dual channel 1600 MHz.
Storage: Well, I have a few HDDs (1T, 240 Gb drive from 2006, 600 GB) and a SSD. Now, only the 1TB HDD and the Samsung 250 GB SSD are connected. It may be relevant to say that 1TB drive has only 38 GB free and the games are installed there.
PSU: I don't know exactly the model, but my brother, who built this PC says that shouldn't be the problem.

Okay, that said, I'm going to expose my problem. With that build, I used to play games like LoL, CS:GO, WoW, some other Source games like Portal, Insurgency, etc... For example, to play WoW in the most recent continent (Broken Isles) I had to set everything at Medium-Low (1920x1080p) in order to play with 45-60 fps, but the gameplay was smooth without any stuttering. The last game I played with the iGPU was Fortnite: Battle Royale. All set in low. I got 60 fps, again no stuttering.

Three days ago I bought and installed a new GPU (yes, I know, "an APU with a dedicated GPU?". Right know I can't afford a new MB + CPU), a EVGA GTX 1050 Ti 4GB, and installed the Nvidia drivers. Now I am able to play with high settings and the same 60 fps. CSGO went from 60 (high settings) to 130 fps. I can play now Alien: Isoletion with ultra settings.

But there is a problem: all games stutter. I'm playing Fortnite with cool 60 fps, and suddenly everything stops for half a second, and this happens every 45-120 seconds. It may look like small stuff, but it gets really annoying.

So my question is: Whats going on? Why is this happening when I installed a way better GPU to the PC, leaving all available memory for the CPU (it used to be shared between CPU and iGPU) and an extra 4 GB VRAM?
Reply to nazkas
4 answers Last reply
More about games sututtering installed gpu
  1. Check computer for overheating issues.
    Reply to darth.gabby
  2. darth.gabby said:
    Check computer for overheating issues.


    I am playing Borderlands 2 right now and it is working fine, no stuttering, I'll be checking the games I mentioned before later. For Borderlands 2:

    CPU temp: 45ºC Max. It has a huge cooler, not the stock one.
    GPU temp: 50ºC Max.

    In addition I can say that, at least for Borderlands, the CPU and GPU usage is 50% on both sides, so that may be the reason its performance is pretty good. I repeat I'll check temperatures and CPU/GPU usage on heavier games asap.
    Reply to nazkas
  3. nazkas said:
    darth.gabby said:
    Check computer for overheating issues.


    I am playing Borderlands 2 right now and it is working fine, no stuttering, I'll be checking the games I mentioned before later. For Borderlands 2:

    CPU temp: 45ºC Max. It has a huge cooler, not the stock one.
    GPU temp: 50ºC Max.

    In addition I can say that, at least for Borderlands, the CPU and GPU usage is 50% on both sides, so that may be the reason its performance is pretty good. I repeat I'll check temperatures and CPU/GPU usage on heavier games asap.
    Reply to darth.gabby
  4. If the games are already running smooth, I think it's your operating system: Windows 10 updating and after it updates it still runs on the background silently and sometimes cause high cpu usage. I have experienced this also on Windows updates. But after the updates and a couple of hidden background updates everything is good again.
    Reply to darth.gabby
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