Lag During Screen Change

[insomniac0]

Hello I am a Noritsu operator from Greece
So, lately I notice lag/freeze when I use the arrows to select where to crop. Notice that the freeze/lag doesn't happen when I apply color corrections or DSA corrections just when I click on the arrows above the photo. If I click on the last photo from the 6 ones it kinda stalls then sends them one by one and then changes "screen" to the next 6. Frustrating can't fill the buffer like this more than 10-20 photos. 
3202 QSS SD.

[purnomosetiawan]

try to upgrade your PC RAM