Yes I do use levels at the same elevation.

It is very minor issue, i do export it to csv and work with that, but for me verifying if I have all items i need to order (pipes, fittings, valves, ...) it is easier to just go trough the "level" and list of items directly in the sweet home 3d as it ...

I have found minor problem
In the furniture list order by level does not actually work



(yes, i'm not using sweet home 3d for completely different use then it is meant to be used, but I kinda at least know how to use this sw)

I have deleted some stuff and got my file from 32MB to about 3.5MB, uploaded to new online version and it is much smoother then grayscale.

Setting 2d view to grayscale helps a lot, but it is still not smooth.

Yes, monochrome trick helps, but it is still not smooth, i wanted to try online version, but my file is much larger then 20MB