Not sure if this will help your ESO performance, but it's certainly helped my performance in other games.
Basically, in 2017 (still not fixed), Microsoft released a Windows 10 update that causes games to stutter because your standby memory fills up (it doesn't matter how good your computer is, I have a GTX 1080/R5 1600). You can read more about it here: [snip]
To fix it, download and run this tiny program: [snip]
It's helped my performance tremendously in some games (like the new Assassin's Creed games). I haven't noticed an improvement in ESO (because the frame rate is generally always low), but it's possible it might help, so sharing the fix anyway (just found out about it yesterday).
Edit for non-secure links.]
Edited by ZOS_GregoryV on January 23, 2019 2:54AM