After the computer restarts, the performance drops. Help somebody

After the computer restarts, the performance drops. Start, the settings menu of the ReLive, some applications and programs start to lag. In the settings menu, ReLive disappears smoothly when opening tabs, the Start menu also lags, and in games a terrible drop in FPS regardless of the graphics settings. This problem I have a very long time, and I do not know what to do. Many times reinstalled Windows and drivers, but the problem remains, although everything is fine with the computer. Help, though somebody: (