I highly doubt this has any bearing he is referring to unchecking gd in your admin panel advaced setting for image processing.
I swear I've changed these before on another site or test site which you are trying to do. It's just been a while. If the admin panel don't do it it's just a matter of locating the file with the references you are looking for.
Only problem I am wondering about is if you or your member already uploaded them and dolphin already resized to 110 and you try to change anything including the admin panel I mentioned above, they may not change due to the fact that it is possible that they have already been changed to 110.
Only way to test is to change in admin panel advanced settings to 160 and re-upload fresh to see if that makes a difference. It's impossible to resize by dolphin something that has already been resized. See what I mean?
Thumbnails are already created at your orignal 110 settings and not pulling it from the original.
Just another shot. Change the settings in admin, then test out a new upload. If that don't do it then some looking into /inc or /inc/classes files for the necessary adjustments will be necessary.
gameuotpia