Is this a new problem? Like has it always been fast and something happened and its just slow now?
Or is this just a general complaint that it isnt as fast as you would like and has always been that way.
Fast and slow are relative to the user, and fast and slow doesnt have a definitive meaning.
Look at the specs of the tractor in the operator/loader manual. Should give you all the specs on how long to raise, lower, dump, and curl.
Most likely rated at PTO or max RPM.
Grab a stopwatch and compare. You may indeed have a problem. Or it may be perfectly normal and just slower than you want