While playing i experience strong drops to 1-10fps. Sometimes my pc freeze even on browser but i can still move my cursor. I noticed that the problem occurs when the processor usage is 100%(4 "jumps" shown in the screenshots). GPU usage is on avarage 60% and temperature for gpu and cpu seems fine. Drops are visible even on the lowest settings in diffrent games.
On other forum they told me that it might be PSU fault(couse its old and might not hold voltage on the 12V or 5V line) but i dont wont to waste my money if its not necessarily. At first they told me that its hard drive fault