Hi, spent a while adapting settings to fix zoom/brushes, within 8-bit, to continue being able to use timelapse ... like to render detail/zoom a lot in usual software, but seeing if can do the same in krita. Tested a new kra canvas with changed settings but timelapse output is dark colours. Then tried converting canvas to default colour space before exporting timelapse. Also tried both JPEG and PNG options re timelapse, as exporting a PNG of canvas works, I imagine due to 'force sRGB'. Have tried other colour spaces too, but I'm finding only the one I've put below helps best with smoothing/clarity at high zoom. Not good at the technical side, so no idea what the colour spaces mean; just found that the Rec2020 works best.

New settings:
A3 600dpi
ram to 80%
colour space Rec2020-elle-V4-g10
undo to 40
display to bilinear scaling mode
turned off various e.g. logging, optimisations (linux/amd)
brush size is at 2100px, but don't know if can just switch that higher to fix things, instead of changing colour space?

PC is AMD Ryzen 7 3800X 8-core cpu, Asus Tuf x570+ gaming motherboard, 32ram, RX5700XT gpu, NVME ssd, using open source graphics drivers. Kernel 5.10.

Just to add that I tried A3 300dpi, which I'd not tried, after reading that A3 600dpi would be a better step-up to try first from A4 300dpi. Turned on Instant Preview too, and message came up saying doesn't run in Bilinear mode, but in Trilinear or High Quality. It had shown as selected for that session I tried it in, but has reverted to 'off' when next opened a new A3 300dpi. I think it had made a slight difference, but, overall, am finding the settings above, including Bilinear, and A3 300dpi, to be best at this time.