Are you utilising the APIs in the UX App or just for some data extraction outside of the UX App?
UX Apps are not geared to handle large data sets in one call.
If you are dealing with a UX App, the advice would be to re-structure the flow to avoid loading an extensive data set and use pagination.
const response = await appModel.getRecord("people", {
page: {
from: 100,
size: 50
}
I can dive into more details if you are looking for API solutions.
Regards