Hi, I've been lurking here for a while now as you can see lol and normally find solutions to my problems by just searching the forums but I thought id actually pick your guys brains this time 
Now I have a couple of issues. When playing some games, the new COD for example it will just randomly freeze for a split second and then the framerate drops then goes back to normal.
I run it at 4K (as I do all my games) and my CPU is at 50-60% usage and my GPU usage is 80-90% which is a bit unusual tbh but I'm using 7.4GB of my 8GB GPU Memory could that cause issues on that specific game?
Also On COD it says it's using 85% of my RAM so I didn't know if that was the problem and knew it was time to upgrade that anyway so I've got 16GB of Corsair Vengeance RAM coming on Tuesday to put in.
I get freezes on other games as well though and they use 100% GPU and half as much GPU memory and Ram.
I'm getting a bit of crackling on through the speakers as well, I notice it more on Project cars as that's just a constant drone of an engine and on the music on the menus. I looked into it and got Latencymon and the Nvida driver (nvlddmkm.sys) was the highest reported but I hooked up another monitor and ran it on that and saw no spikes at all when gaming and the sound was crackling.
I've updated all my drivers and turned off things like Speedstep EIST, and the onboard sound in the BIOS as some suggest and uninstalled the HDMI drivers for Nvidia as I use a sound card but its made no difference.
I have got a few old parts and don't know if any of them are causing issues. Here's my specs,
I5 3570K OC'ed 4.2GHZ
MSI Z68 G45
Zotac GTX 1070 Amp
Crucial 8GB Ram
Samsung 840 120gb SSD for Windows
Kingson HyperX 240gb SSD for games
Soundblaster Recon3D
Windows 10
Any ideas what my problems could be and anything I can try?
Thanks

Now I have a couple of issues. When playing some games, the new COD for example it will just randomly freeze for a split second and then the framerate drops then goes back to normal.
I run it at 4K (as I do all my games) and my CPU is at 50-60% usage and my GPU usage is 80-90% which is a bit unusual tbh but I'm using 7.4GB of my 8GB GPU Memory could that cause issues on that specific game?
Also On COD it says it's using 85% of my RAM so I didn't know if that was the problem and knew it was time to upgrade that anyway so I've got 16GB of Corsair Vengeance RAM coming on Tuesday to put in.
I get freezes on other games as well though and they use 100% GPU and half as much GPU memory and Ram.
I'm getting a bit of crackling on through the speakers as well, I notice it more on Project cars as that's just a constant drone of an engine and on the music on the menus. I looked into it and got Latencymon and the Nvida driver (nvlddmkm.sys) was the highest reported but I hooked up another monitor and ran it on that and saw no spikes at all when gaming and the sound was crackling.
I've updated all my drivers and turned off things like Speedstep EIST, and the onboard sound in the BIOS as some suggest and uninstalled the HDMI drivers for Nvidia as I use a sound card but its made no difference.
I have got a few old parts and don't know if any of them are causing issues. Here's my specs,
I5 3570K OC'ed 4.2GHZ
MSI Z68 G45
Zotac GTX 1070 Amp
Crucial 8GB Ram
Samsung 840 120gb SSD for Windows
Kingson HyperX 240gb SSD for games
Soundblaster Recon3D
Windows 10
Any ideas what my problems could be and anything I can try?
Thanks