I currently use a wired tethered connection. I usually experience 50-70ms ping with the occasional spike (usually due to a lack of bandwidth). But now I ping to blizzard servers at ~180ms. I have little to no control over my network, however, I am not experiencing any other differences in other game…

High Latency after recent Patch

Nicole-1893 July 18, 2019, 6:30pm 5

Your issue seems related to the one being discussed/tracked by staff here:

Go ahead and add your WinMTR there too, please