You don't need to prepend spring everytime. I'm not sure why you're getting those numbers but try the following.
# make sure that spring server is stopped
>> spring stop
# take note of the time here
>> time bin/rake routes
# start spring server
>> spring
# test routes again
>> time bin/rake routes
The second bin/rake routes
should be very fast. In one of our apps, without spring, it takes 8 seconds to show the routes. With spring, it's less than a second.
For rspec, you need to install an additional gem for that. Look at the additional commands section of the spring gem