Slower than cable fiber internet

Recently switched over from cable (Spectrum) to fiber (OmniFiber) after a neighbor recommended us too.

Our modem and router is placed in the middle of our house in the living room behind our tv, we pay for a 1gig plan but with my wife and i’s gaming setups in the basement directly below our router we get at times 130 mbps tops to as low as 1 mbps. We were getting faster speeds with spectrum (around 350-400).

Not sure if this is a provider issue or our own. If you have any suggestions It would be appreciated!