I live in Denver and never have less than 45 ping when I queue in Valorant.
I have gig fiber with like 5 m/s ping to Denver, and typically Chicago and Dallas are both sub 30 ms.
When I play with my east coast friends we end up on VA servers and I have like 80+ ping, when in CS I can play VA servers with probably 35 to 40 ping.
I opened a ticket about it and the tech eventually just told me that my ISP needed to peer with Riot direct.
Obviously directly peering with another network will improve routing decisions and latency, but I don't have to f**king peer with any networks to play any other game and have amazing ping, so that seems like a bullshit cop out to me.
It's honestly pretty frustrating. Admittedly 45 ping isn't terrible, but playing with friends and getting 80, 90, or 100+ is kind of stupid.
Plus, I've already confirmed in many cases that I can flip on a VPN(I use PIA) and see lower pings. The issue is it isn't totally consistent. I've used PIA and gotten like 15 ping in Valorant, but I've also seen it get worse depending on the server I'm connected to, and sometimes there's a bit of jitter that's worse for gaming than a steady ping anyway.
But at least it proves that shitty routing is actually the problem.