I am running into the same issue. The chromosome of wheat go up to 830 Mp. Would it be possible to incease the limit with a command? A lot of plant genomes have chromosomes of that size, see https://en.wikipedia.org/wiki/List_of_sequenced_plant_genomes and https://www.researchgate.net/publication/321833590_List_of_plant_genome_sequenced_with_genome_size_and_chromosome_numbers