Increasing time of dimension's process update

I have question about time of update process of dimension - each day my cube is processed 3-5 times.

It's a SSIS package, in which i have process update of every dimension and process full of data partition. Day by day, time of processing dimension is increasing.

I noticed that time is decreasing after cube deploy (after small change in metadata I had to do this). But after this, every time when there is update process time is increasing.

Will Process Full of dimensions help in this case? I could Process Full at night, one time and each of day processing would be Process Update...