So I have pondered on how deep that mess is, and what the appropriate comparisons might be. It’s hard to be sure what they are. The 1930s were grim. But there wasn’t, maybe, the political paralysis that we now see.
The Irish question in the last 19th century created some paralysis, but it has to be contrasted with a nation that was, overall, confident with itself.
The comings and goings of German royalty on the British throne created various stresses in the 18th century that continued until the Victorian era but not, as far as I can see, a paralysis to match that we now have.
I have to really go back to the English Civil War era to find anything to match that. That is both in the era leading to the war, and in its aftermath when stable government around any constant bar Cromwell proved to be impossible.
*The second being the American Revolution.