ok probably its not video related then..
possibly it is something fixed in a later sp as tnik says..
however assuming it is something other than a bug other avenues to investigate are -
I wonder how much RAM you have and are using? pagefile big enough?
do you work on these files locally or over the network? are other people working on the same files? do you have a PDM? is the network configured properly? at least 100mb/s?
I take it you do not have subs support ie a VAR to talk to? Ideally you should get someone who knows the ins and outs of SW to come and assist you seeing as your IT people aren't specialised in this. Perhaps there is a knowledgeable local user group member who would assist but pay them for their time if this is serious. Really pay for expertise.
Also it is quite difficult and inefficient to assist you over the internet and you are relying on the generosity of passers-by with limited time to interpret your issues from scant information . Saying you have a problem with performance feedback not working may be true but by the sounds of it this may be just the beginning of a whole lot of things that need to be examined.
PS Even though you have admin rights you will need to enable showing hidden files to see the Dr Watson log -it may actually not be all that useful to you though anyway..but- pull up My Computer and in the menu go to Tools\Folder Options\View, in the panel there in the Advanced settings bit see the Hidden files and folders entry.