Shouldn't be much. Why not just trying? I don't think anyone has this figure noted down (not sure for what it is good anyway), so probably everyone would have to do this - create a new installation and check.
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Provide your LS version and where it is installed (own server, uni/employer, SaaS hosting, etc.).
Always provide a LSS file (not LSQ or LSG).
Note: I answer at this forum in my spare time, I'm not a LimeSurvey GmbH employee.
