Yes I use Three 5G.
I used to get 250mbps down/15 Mbps up but looks like Three have capped it to 150mbps down nowadays for my local area. My latency jumps depending on whether the local school is in session or not. During the daytime the ping test latency can go anywhere from 89ms to 130ms. During the night time the ping can settle as low as 29ms.
For gaming, the determining factor is not so much the bandwidth but the latency.
If you're going to go with 5G on your new home it's best to test it out first when you view the property if internet provision is a red line for you.
As always YMMV as speeds/latency depends on how good the signal is to your property and network congestion.