So long story short I changed my motherboard and I changed my CPU from i5 4460 to i7 4790k. (A professionalist did it obvsly, not me)
He gave me my computer back, I powered it on and the loading time from around 30-40 seconds became 2 minutes and probably even more (I am using a SATA HDD). So when I open my task manager, my Disk usage is around 98%, sometimes 100%. When I stress my CPU and GPU to 100% by AIDA, the Disk usage becomes normal. I gave the PC back to that professionalist, and he told me my reading speed is around 3 MB/s, which is crazy slow. Games like Overwatch are easily handled at 180 FPS on Ultra graphics quality (the max) but when I open a case, or something drastically changes, I get a lag spike for 2-3 seconds, which can be really annoying. The dude at the store still can't figure out the problem, that's why I am asking you, guys, what should he try?
He gave me my computer back, I powered it on and the loading time from around 30-40 seconds became 2 minutes and probably even more (I am using a SATA HDD). So when I open my task manager, my Disk usage is around 98%, sometimes 100%. When I stress my CPU and GPU to 100% by AIDA, the Disk usage becomes normal. I gave the PC back to that professionalist, and he told me my reading speed is around 3 MB/s, which is crazy slow. Games like Overwatch are easily handled at 180 FPS on Ultra graphics quality (the max) but when I open a case, or something drastically changes, I get a lag spike for 2-3 seconds, which can be really annoying. The dude at the store still can't figure out the problem, that's why I am asking you, guys, what should he try?