From the error messages it’s unrelated to Lua heap so that 2gb switch won’t do anything and is a virtual mem/page file issue.
That error 1455 is indeed:
ERROR_COMMITMENT_LIMIT
1455 (0x5AF)
The paging file is too small for this operation to complete.
The obvious stuff (forgive me if stupid and too obvious, worth a check):
OTOH do you have a system managed page file? Enough actual free space for the swap file?
Probably unrelated, oddly, in another slightly similar Virtual Memory error 1455 turned out outdated drivers were causing issues for the other user. Though here it’s “render_page_allocator”, going to assume not a VRAM issue if everything was set to lowest etc ?
FS staff will probably be in the offices soon with hopefully more help, they can look at the logs and see if there’s more there.