Memory increases when upgrade ruby from 1.9.3 to 2.2.10

I was using Ruby 1.9.3 + Rails 3.2.22 in heroku, recently i have upgraded ruby 1.9.3 to 2.2.10 then i could see that memory is growing fast and getting memory quota, we were using performance L dynos and WEB_CONCURRENCY as 80. Will it help anything with GC Tuning?

Before the upgrade memory was reaching 14gb after 9 PM only After the upgrade memory was reaching 14 gb on every 4 hours