Points for a home PC:
- No monthly cost, more screen space, easier to use charts.
- Fibre connections often give ping in the tens of milliseconds, fine for manual scalping.
- Power cuts and router restarts, which can leave positions unmanaged.
- Windows updates restarting at bad moments.
A practical way to decide: log your home disconnects for a couple of months. If they happen several times a month during trading hours, and positions rely on manual management, a VPS pays for itself quickly. If they're rare and every trade has a server-side stop, the case is weaker.
Many traders use both: charts and decisions at home, an EA or trade manager on the VPS.
Which setup do you use for GBPUSD?