Hello, the issue is as i've described in the title.
Pretty much, when I watch Youtube or VRV on my second (not ffxiv) monitor, it stutters really bad when im tabbed (focused) into FFXIV, but fixes if i tab out or unfocus the FFXIV tab.
Thing's i've tried:
- updating gpu drivers
- disabling gsync/freesync
- disabling windows 10 game mode
- disabling hardware acceleration on chrome and firefox (and it seems to work sometimes but not all the time)
- going into fullscreen instead of windowed/borderless (seems to work sometimes but not all the time)
- changing display performance mode from single display performance mode to multiple display performance mode in nvidia profile inspector (settings dont seem to stick or do anything for some reason even though its running as an admin)

I have no idea what to do and I am completely at a loss so I thought i'd ask here and get some ideas.

My specs:
GTX 1080
Ryzen 1800x
32gb DDR4 G.skill Ram

the monitors:
A 1440p 144hz one (The main monitor) and a 1080p 144hz one (The second one)
If it matters, the 1440p one is a LG monitor and the 1080p one is an Acer one, although i dont know the exact name of the Acer or LG one off the top of my head.
This is a relatively new issue that i've had since getting my second monitor, as before i only had one monitor and couldn't even do this. (if thats relevant.)
Thank you all!