I'd been using nvidia's tool to make videos until I chose OBS as it allows making separated audio tracks and everything was fine - no lags or crashes. But after I started using OBS every footage is showed extremely laggy especially at transitions. Though my pc is quite powerful - only 8/32 gb of ram is used(constantly) and 60%> of GPU/CPU. I tried setting CQP 15, but still too laggy and it weighs too much - 2 hours (1080p) = 90gb. Any idea how to make videos lighter but still with good quality?