I have a problem with my pc. everytime that I start my computer all of my games have lag spikes and some input lag but there is no screen tearing. I don't use vsync I hate that input lag and screen tear doesn't mind me. If I restart my computer everything works perfectly and there is screen tear. But if I use my computer for long lag spikes start again and screen tearing disappeares. I hate when this happens and this has been problem for a while. Does anyone know what's going on with my pc? I have sapphire amd radeon r9 380 and intel i5 4460