installer launch slow due to large files being copied

I searched the forum and did not find a specific answer to my question, although I did find some related stuff.

I have an installer.exe that is about 200 Megabytes in size. When it is launched, it can take more than 20 seconds to show the first screen on a relatively fast machine. I am told this is because the installer is copying the 200 Megs worth of files to a temp directory.

I would like the installer to show me the first screen much more quickly, like in about one second. How can I achieve this?

Can I background the file copy?

Can I delay the file copy until after the first screen is launched?

Any other suggestions?

Thanks in advance.

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