iControl for Gtm wideip

i am using iControl Rest 2.4 downloaded from https://pypi.org/project/iCR/. 

while using  wideips = bigip.getlarge("gtm/wideip/a", xxx) , where xxx is the size of chunk, i would like to understand the limit of chunk size.

if i use wideips = bigip.get("gtm/wideip/a") , it works if i have 200-300 hundred wideips, but in case you have +10k wideips it gives you Error 500, AsyncContext timeout.

what is the best way to download via api the /mgmt/tm/gtm/wideip/a ?