This has not happened in the couple of years I have used Bandicam. I am running a high powered pc with Win 7 and an NVidia graphics card GEforce 260. A data hard drive crashed and the computer was in the shop. Seems to run fine after removal of the drive, but now video stream freezes and buffers only when Bandicam is recording. Also only happens when the video is full screen. My download speed is excellent 400 mbps. I have tried tweaking all the video parameters. I don't want to downgrade to a lower resolution since it has been fine previously.