At the moment I am using a Go Pro 9 and two 9,000 lumen Divepro video lights. The results can be seen in trip reports, so not too shabby.

I currently shoot in 2.7k format. The Go Pro will do 5k, but my notebook makes hard work of processing this type of. Notebook has 16Gb of RAM plus decent video card.
I take video of the wildlife and wrecks. I thought about doing photogrammetry but seeing the results of the professionals and their 45,000 lumen lights, with 250 Gbyte RAM processing power, that is probably out of my budget for now.

Upgrading the notebook to a new machine is a possibility. But at 3K to make a difference, not sure.

If I were to upgrade the video camera, what should I go for?