As it happens, many of our customers are using Kirby 3 on their webspaces with some limitations to PHP uploads. Some of them can’t change max post filesize on their PHP.ini due to restrictions. Others are using CDN like proxies like Cloudflare which only accepts uploads with up to 100 MB on their small plans.
A simple and reliable solution would be to enable chunked uploads with 5 or 20 MB per chunk to be able to upload large files (100 MB+).
This would help us and our customers to bypass this limits on almost every server and they don’t have to upload large files via FTP or even switch to a whole server (where these can edit these limits).
Other self hosted services like “Nextcloud” also do it like this and this works pretty well!