d3dx9_27.dll seems to be needed for playing Oblivion. Thus, you need it.
I’m not sure if it affects to battle where the king where murdered, but I set this to native only and cleared it. Though, same time I waited ending of the battle behind the corner.
(1.1.0) Wine implementation of quartz is buggy and seems to cause random crashes. Disabling it removes in-game musics but seems to help with both crashes and battle performance.
Commenting on issues of current version
When you paste the comment about game graphic lag or other issue, please write your system information within the comment text!
For example, under GNU/Linux you can use following commands:
$ uname -a
$ wine --version
$ lspci | grep -i vga
And paste the output with system hardware info to the comment text. Nobody can help you without this essential information!