Just visiting this area because I have a problem as well. I will try the solution above. For me the website loads but you can no longer navigate to any other page and eventually the server times out. Turning off this plugin resolves it. I guess it might be a conflict or it might be due to this problem. I have used this plugin for several years on this particular website with no issues until now.
Just tried the advanced settings fix, it did not work for me. Page continually loads and eventually times out with an error. I have disabled this plugin in my installation, I will leave it disabled and wait for the next update. Hosting company suspect there is a repeating loop in the code which does not exit and consumes all of the memory judging from the error logs. It does not happen if I deactivate it.