4G internet on RBI - how come I can select multiple servers on Speedtest and why is upload speed so slooow...?

Hi,

Q1: I'm on 4G wireless internet (great big MIMO dual antenna on my roof) and we live in the bush in Albany (Auckland) area. I get downloads of about 20-30 mbps but my upload is a miserable < 1 mbps typically..sometimes only 0.5mbps. On rare occasions the upload will be 12-15 mbps though. (I used to be on ADSL and was getting 12 mbps down and about 1.5 mbps up.

My ping can vary a lot, but often ping is about 15-25ms.

Is Vodafone throttling the upload speed through the nearest tower?

Q2 for experts: Why does speedtest allow me to select individual servers (only one of which is Vodafone NZ) to test out my speed...? Which server is the real speed that my internet is connecting at?

STATUS:

USIM card status: Normal

Network mode: 4G+

IPv4 status: Connected

IPv4 address: 49.225.198.91

Rsrq: -6dB

Rsrp: -107dBm

Rssi: -81dBm

PCI: 25

Upload Frequency: 1770MHZ

Band: 3

Thanks, Carey