Performance of nextcloud text with images

in a NC text markdown document, we have currently 24kb of text but 100MB of associated pictures. Now very often NC text loses connection, messaging ā€˜file could not be loaded’. This is very annoying, as after reconnect, NC text gets opened at the beginning of the file. We use it as a diary so must scroll to the end again.
Is it thinkable images throttle down NC text in such a way?