Split export to multiple timelines (--limit-length)

[MilkAndBanana1]

Currently using this with multi-hour long videos (4+ hours) with the --export resolve function and I have found that splitting the timeline to multiple chunks helps alot with the lag. Problem is that while doing this process, its often quite slow due to working with one giant timeline to split into chunks.

If there's a way at export to automatically split it into 1 hour max per timeline (eg: --limit-length 1h or 3600sec) to improve performance upfront that would be great.