Imperial Pacific International Holdings says VIP gambling turnover at its temporary casino on the island of Saipan fell by more than one-third last month.

In a filing with the Hong Kong exchange, Imperial Pacific said rolling chip turnover at its casino in the Commonwealth of the Northern Mariana Islands came to $1.65b in June, down 35% from May’s number and barely half that of April’s $3.2b. The turnover figure is the lowest since last December’s $1.44b.

The figure adds some credence to Imperial Pacific’s recent claim that its VIP turnover “will cease to grow and have become saturated.” Mark Brown (pictured), CEO of Imperial Pacific subsidiary Best Sunshine International, later claimed that the saturation comment was only made because the early returns on the casino had been so massive that some tempering of expectations was needed.

Brown recently gave an interview with World Casino News in which he repeated that the property’s “explosive growth will not grow exponentially forever, particularly given the current hotel capacity constraints.”