Ceiling Impact Noise Reduction

[Frank Robinson]

Hi, we recently bought a multi-family property we are renovating. After installing vinyl plank flooring on the 2nd floor, we realized that the included underlayment doesn't provide enough cushion and a lot of foot impact noise is heard down on the 1st floor. Aside from redoing the floor and installing thick rubber noise barrier, which will be very expensive, what do folks recommend on solutions to decrease the impact noise heard on the 1st floor?

I read about soundblocking drywall and greenglue, decoupling, resilience channel ceiling installation. Does anyone have any experience?

Easiest solution may be to just install an additional layer of soundblocking drywall on the existing 1st floor ceiling, but don't know how effective it will be