Bundle eats all resources while gitlab-ce running

I installed gitlab-ce on my digitalocean droplet, it works fine but very slow, im also turned off nginx as it thinks that time is out on simple requests, and the problem is in bundler. bundle process runs forever and eats all memory. What is the reason of this? I thought bundle is needed only for setup and it is not required for running as I see other gitlab processes. Even if I kill bundle process manually it is started again by git user. How to fix that or is it all goes as intended?