To be honest I'm going to change my computer in a few months but I still want to fight against a trouble that I have in my computer. SPECS
Asrock 970 Extreme4
AMD FX-8350
2x8GB 1600DDR3
Asus DUAL-GTX1060 6GB
Samsung 840 EVO 250 GB and SanDisk SDSSDH-3500G 500GB
The issue is that for example while playing Destiny 2 it doesn't matter if I put the game at High graphics or at Lowest.
I can play it without issues at rock solid 60FPS but from time to time (most of time when there are tons of explosions in screen) it suddenly falls to 2-3FPS or even 0.5FPS for a few seconds and then it returns to work perfectly, sometime I have a stutter like that every few minutes and sometimes it takes a hour in doing but always will do it.
One strange thing is that when that happens if I check in the windows system monitor the load of the computer it seems that it had the CPU and GPU working depending on the setting I put in the game (when playing at high graphicts the CPU and GPU are almost at 100% all the time and in low setting they are at 50%) but when the stuttering/slowdown/freezing happens the load of CPU/GPU falls to 5% like it was idling).
There are other games that due the same, for example today I played Watch Dogs and while driving a car it does exactly the same, the fun part is that when I had a AMD Phenom II X4 965 and a GTX770 with the same board the game never reached the 60FPS but It didn't had any slowdowns.
Checked:
Windows reinstalled from scratch only with graphics drivers, steam and a game.
Not thermal throtling, GPU has the fan speed in automode and it never reaches 100%, CPU has a DarkRock Pro2 for cooling and it keeps at 55ºC. The Mobo reaches 60ºC but I think that still it isn't so high)
No RAM corruption checked with memtest
When that happens the sound gets also glitchy and it remembered the DOS times when you had to limit the sound channels or you'll get slowdown and started hearing tons of glitched sounds so I tried to desactivate the sound card from the windows devices screen.
People say that the GTX1060 can't get the most of the PCIE-2 but the 3DMark PCI Express tests goes 6GB/s.
To be honest I'm wondering if there is something wrong in my mobo or if it can be a trouble with the PCI bandwith of if there is any memory buffer that gets full and has to free space, if anyone has a idea about what to check I'm interested in reading.