Hello,
I used to have a high-quality tested tunnel badge for my US East node that went away after I migrated the server and a new primary IP was assigned. I also opened up a US West node. These are hosted in a Data Center with 256 GB of RAM and 16c/32t. I read in another post this might be automatic but curious if there is something on your end you are seeing as slow. I know when I checked the server browser list from Pennsylvania the US East node had the best ping of 11 for me and it's in Virginia.
[US East] Z Server MP https://zserver.org
v3
135.148.6.36:50001
0 / 200
OK
[US West] Z Server MP https://zserver.org
v3
147.135.46.178:50001
0 / 200
OK