Vendor price lists

I am attempting to import large vendor price lists of north of 30k items.
it works well to break the files into 1k chunks but you have to do 30 imports then for 1 price list.
is there a work around to make dolibarr break the file up and do multiple imports?
if you try to run it as one it doesn’t multi thread, it runs as 1 process as one php script so it is very slow.