Streamline : Lag in capture

Streamline was running smoothly but now there is a lag in the streaming timeline (To complete 10 sec in the timeline of capture, it takes 20-25 seconds) even if I'm monitoring one counter. It is capturing data very slowly.

My System Specs : 

RAM: 16 GB

Processor : i5 10th gen

Free Space: 100 GB

and No other application is running in parallel.