Same here. I was on Nexus for the longest time and iPhone X was first iPhone since the first one back in 2008. No issue with speed at all. I use it to tether to my MacBook quite often and speed been reliable for me.
To be honest for me it has impacted it somewhat bad as it pertains to conference. I use to have zero issue of going up to anyone but after four years of working from home there is a hesitate aspect now I have notice.