dai

a clean install takes about 40 minutes
an upgrade install closer to 2hrs on a high spec machine
i have been installing them through the beta testing for the last 2yrs and the long delay seemed to disappear towards the end of the beta testing
on the bottom of the install screen it usually states it can take up to 6hrs to complete
i always after the first couple of upgrades found it quicker to do the clean install and reinstall everything else as i needed it

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