Hello from Aunty Jack,\r\n\r\nMy old Dell Optiplex is stuck with the onboard graphics device, the Intel82865G and with the Intel driver acceleration pack. (for Dell, R12991).\r\n\r\nPlaying very large MP4's and other formats with most media players gives jerky/green line/stop start performance even with the full install of VLC.\r\n\r\nGrabbed VLC Portable and installed it. Well !!!. What a difference, a 200Mb MP4 that gave all the usual problems with a graphics challenged PC played and behaved full screen perfectly. No stop/start/green lines etc. Perfect performance.\r\n\r\nSome like VLC, some don't. A matter of choice, there are so many multimedia players.\r\n\r\nBut, if you feel inclined, try VLC Portable.\r\n\r\nCheers from Aunty Jack.