Summary
Add a "Fastest Server Priority" setting across all Proton VPN apps (Windows, macOS, Linux, iOS, Android) that lets users pin a Primary and a Fallback country to the Fastest Server connection mode — so speed-optimized connections still respect geographic preference.

Proposed Behavior
When Fastest Server is active, Proton VPN resolves the connection in this order:

A. Primary — Connect to the fastest available server in the user's preferred country (e.g., Philippines).

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B. Fallback — If the Primary country is fully unavailable due to maintenance or an outage, automatically switch to the Fallback country (e.g., Singapore) without any manual intervention.

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C. Global default — If both are unreachable, Proton VPN falls back to its standard Fastest Server algorithm worldwide.