Bought a new tv last weekend and hooked it upto my machine via a dvi-hdmi cable through the specific hdmi/dvi input on the tv. Whilst everything else works perfectly (browsing, general pc usage, wmp/media center etc) I find games keep jerking, as if the hardware is struggling, things run smoothly for a minute or so then things freeze etc and then resume for another few minutes.
This happens across the board with every single game i own, old or new and happens regardless of what settings i use ingame, ie.lower resolution, turn off AA etc. Also not just the graphics stutter but sound also, even when again turning those settings down in game.
Since I use a set of 5.1 speakers for the pc i tried disabling the HD sound output on my gpu with still no difference to anything, i've also tried putting the catalyst control settings back to default and again no joy.
Anyone that can offer some ideas would be greatly appreciated, as said before everything apart from games runs perfectly smoothly using full settings on my gpu and the tv's native 1360x768 resolution, and everything including games used to run perfectly before using my old vga monitor and still does if i reconnect.
Machine specs are:
AMD athlon 64 x2 6000+
HIS ati radeon HD4850 1gig
windows vista premium
samsung 50" plasma via hdmi/dvi