I still get this, people have been posting about it since DF launch. You’ll notice it even more if you spam press a single button (Ice Lance is a reallllly obvious one). I also swapped PCs, twice actually with no changes. Reset all my settings to default, did no addons, fresh install of windows. Swapped ISPs, swapped routers to three different brands.
I also do not get anything like this issue in any other game I play.