I am having same issue after running a repair today on Sims 4. I do not use any Mods or CC. I have 8-core processors on my PC and Origin is spiking the CPU to over 95%. My PC did not crash luckily, but when new Sims Packs were being pulled up going into verify process at times I would get the same error message pop-up (Attached screenshots). I also attached my Origins version number from the most recent update. Hope this helps in getting issue narrowed down and fixed.
4 weeks and counting is a ridiculous amount of time to let this go on, can you please provide a time frame of when this will be resolved and patch sent out. There are a lot of reports on Sims 4 bugs where game is crashing and most likely it is all tied back to this.
I've been seeing this issue for a while now but on a different scenario :
If you tell origin to download anything, specially if other apps are open with it, it'll go berzerk and either use your entire CPU power out of nothing, or be locked with 100% disk usage even after the downloads are complete, I observed this while downloading things like mass effect and spore while trying to play something else or watching videos on my browser, the way I used to stop this behaviour was to download stuff and then restart origin after it finishes.
