I need to adjust my MTU setting to optimize my connection with FIOS, however it seems that this basic feature is not available via the Deco app or anywhere else. It seems like it used to be avilable, and definitely is from other mesh routers on the market (e.g. Linksys). This is truly a shame.

I contacted chat, and the gentelman I spoke with was largely unhelpful indicating that this is not a feature they have. And asked me to email support.usa@tp-link.com to see if I could request this as an added feature (appears he did not have the ability to do it himself? crazy).

To anyone that finds this thread, please email them and ask to add this feature. I know TP-link will not be able to solve this issue on this thread... sigh.