I've worked in optical industry for many years and personally wear progressives. Here are a few important facts
1. there are many different types of progressives, some are more suited for mid range (computer) than others.
2. They must be alligned perfectly (this needs a high degree of skill in measuring and making sure the proper fit and appropiate type of appliance)
3. Your presbiopia (https://en.wikipedia.org/wiki/Presbyopia) is an age related condition and will get worse as you age.
4. Your head position (including posture) relative to your monitor is an important variable.
So if you want multifocals to work go to someone who knows what to do. That means staying away from the chain stores and paying a little more.