I have around 2-3000 1-bit geoTiffs of size 11000x9400. Color 0 should be transparent, and QGis gets it wrong in the first place, so I used a .vrt file to set all the parameters in one single place.
Problem is, even if I set the layer to be visible only at a small scale, the project takes a lot of time to load in QGis.
Which is the best way of dealing with all these files? I tried using grass, but I don't see if it can really be faster than QGis.