I have had a raspberry pi B+ for a little over a year now, and I've noticed consistent performance issues after running motion service for a long period (anything over an hour or so). Originally I was using an older USB camera from a thrift store, then a newer usb camera, and now a picam and it's the same response. I have a hard time ssh'ing or vnc'ing into my pi. Each time, I just delete all of the files created from the motion service in /var/lib/motion and then it works fine.
Has anyone else seen issues with this? Is there another tool/service I can use to record video and stream it over ip?