i got a little problem with oblivion 4... well... it happens with some games too but it happens all the time in obilivon 4...
the thing is that if i kill, the game just freeze in 0,5-1 sec...with the game Torchligt i can play with all settings on max and run really smooth but sometimes when i kill alot at the same time the game may just freeze 0.5 sec...i run Torchligt really smooth so i think its really weird.....
my computer spec:

Graphic card : 9500gt top 512mb
ram : 2gb
proccesor : core 2 duo 2ghz

Graphics driver up to date? Game patches installed? Is the operating system compatible with the games? If not, change the compatibility mode.