I noticed remote bigWig files (http URL) take sometimes about 1 minute to load on IGV. Once they loaded, jumping from one region to another can also take several seconds.
My understanding is that bigWig files have an internal index for different chunks of different sizes. Can the index be modified so that the speed of loading on IGV is improved? Does this need to happen at the point of creation of the bigWig file, or can the index of an existing bigWig be updated to speed up loading?