Large diffs and comments for a merge request


I have a quite large merge request (90 commits, patch is 200MB large) which I would like other user on my Gitlab instance to review, by commenting in the code, ideally.

However, I cannot find any way to do it, as the “changes” tab states that “The diff is too large to be displayed, try downloading it”. Is there a way to still comment on lines of the source files in such a MR ? Or is there a way to change the threshold for “large diff” ?