High disk usage from "Host Process"

[Microsoft Windows]

My computer is almost constantly listing the disk at running at 100%. Something labelled "host process for windows tasks" makes up 60-90% of it. I have done most of the things recommended to fix high disk usage including stopping indexing, reducing some of the malware features, running a check on the disk to fix it, and even doing a clean boot. What is that task and what do I do to fix it?

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