the dag size increase slowed 1080ti down, its just the way it went, increasing the core helps, at least on mine.
the original pill may still help but the latest claymore has a straps option thats pretty good if you cant get the original pill i dont know where to get one as its long been taken down officially.
BEWARE the new fake eth pill you see in posts that pop up hourly it seem, they are malware.
you dont need pill anymore all of the miners have some kind of comand that fix memory timings like -strap 3