The default setting is as follows:
Group 1 shows 1000 Point (100 Pip divisions)
Group 2 shows 250 Point (25 Pip divisions)
Groups are duplications of each other to allow multiple divisions to be visible at once, e.g. 100 Pip grid and a 25 pip grid with differing visuals as the default setting.
Number of Lines above/below will alter the amount of lines drawn, change as required, note: Tradingview seems to try to capture all drawings when double-clicking the right price index which can cause this to compress the data.
depending on preferred timeframe you may want to alter this for example to a 10 pip grid (100 point)