Hello,
I have several peering.
I am in France and I have a fiber that stands out in Paris in IBGP (with Vultr via GRE).
When I activate only this peering we have 21 ms of ping as much towards the Gateway as the servers which are behind via a switch with ethernet cables.

But when I activate our other peering (In Germany and London), in IBGP via GRE for London and in EBGP via EOIP for Germany, the gateway ping (the .254) is always at 21ms, but the servers which are connected via ethernet cable behind are at 37ms ...

I don't understand why there is such a difference ...
I never put next-hop or other because I am a beginner in the field I do not yet know all these attributes.

Thank you for your help.