Delay

My site http://www.allaaktiviteter.se have a delay for 2.8 s before any sites start to load.

I have done speed test here:

http://www.webpagetest.org/result/160429_QD_32K/1/performance_optimization/#first_byte_time

It say it take 2.8 sec before it load the first byte, Google speed test also complain about connecting to the server take 2.8s.

I have a really good dedicated server with a lot of sites and there is no problem on the server. I have tried to optimize everything with no success.

Iam thinking if its a cloudflare, ssl or https problem.

I would be so happy if anyone can help me, big thanks!

https://wordpress.org/plugins/wp-optimize/