Japan Google Maps in English Romaji

Note: the default is to have everything UNCHECKED

Towns

• Show 'Machi' only at closer zoom (speed boost, less clutter, but less info)

Railway Stations

• Never show
• Never show small stations
• Hide those little dots (you lose the ability to click these small stations but gain speed)

Tokyo Subway Stations

• Show only at closer zoom (speed boost, less clutter, but less info)

Prefectures

• Hide Prefecture Labels (Speed Boost)

Suffixes

• Hide Suffixes (You can always see them by hovering the icon.)

Here is the user marker.