I've generated internal elevations using interior elevation tool, which I've used successfully numerous times to date, but time they're seriously slow to update, ie. over 10 minutes for 12 very basic '1:50' level of detail elevations on one sheet. I noticed lighting was turned on, turned that off but hasn't made any difference. Also, have set the view depth box to just outside the elevations. File is quite tidy as I've just been through it and taken lots of complex stuff out.
Any advice appreciated...