slow-loading

#In my schema
  t.string   "picture",          default: [],              array: true
  
#In my projects_controller.rb
 def index
    @projects =  Project.friendly.all
  end
 def show
    @project = Project.friendly.find(params[:id])
  end
  
def project_params
    params.require(:project).permit(:content, {picture: []}, :project_name, :project_headline, :project_text)
  end

#In my model, project.rb
  extend FriendlyId
  friendly_id :project_name, use: [:slugged, :finders]
  default_scope -> { order(created_at: :desc) }
  mount_uploaders :picture, PictureUploader

#In index view
		<%= link_to image_tag(project.picture[0].url, class: "img-responsive"), project %>
		
#In show view
	<% @project.picture.each do |picture, value| %>
	  <ul class="project-image-list" id="imageGallery">
			  <li><%= link_to image_tag(picture.url, class: "project_image_show"), picture.url %></li>
			</ul>
	<% end %>


#logs on index 
2016-03-13T11:04:50.062544+00:00 app[web.1]: Started GET "/prosjekter" for 193.90.166.63 at 2016-03-13 11:04:50 +0000
2016-03-13T11:04:50.064669+00:00 app[web.1]: Processing by ProjectsController#index as HTML
2016-03-13T11:04:50.064707+00:00 app[web.1]:   Parameters: {"locale"=>"en"}
2016-03-13T11:04:50.067677+00:00 app[web.1]:   Project Load (1.0ms)  SELECT "projects".* FROM "projects"  ORDER BY "projects"."created_at" DESC
2016-03-13T11:04:51.250120+00:00 heroku[router]: at=info method=GET path="/prosjekter" host=www.connexmalermester.no request_id=e46dd95d-90d1-4ffe-8fe0-43b32f15239b fwd="193.90.166.63" dyno=web.1 connect=0ms service=1188ms status=200 bytes=8162
2016-03-13T11:04:51.243502+00:00 app[web.1]:   User Load (1.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1  ORDER BY "users"."id" ASC LIMIT 1  [["id", 1]]
2016-03-13T11:04:51.244404+00:00 app[web.1]:   Rendered projects/_projects.html.erb (1178.0ms)
2016-03-13T11:04:51.244491+00:00 app[web.1]:   Rendered projects/index.html.erb within layouts/application (1178.3ms)
2016-03-13T11:04:51.246148+00:00 app[web.1]:   Rendered layouts/_header.html.erb (0.9ms)
2016-03-13T11:04:51.246717+00:00 app[web.1]:   Rendered layouts/_signed_in.html.erb (0.4ms)
2016-03-13T11:04:51.247036+00:00 app[web.1]:   Rendered layouts/_footer.html.erb (0.2ms)
2016-03-13T11:04:51.247375+00:00 app[web.1]: Completed 200 OK in 1183ms (Views: 1179.2ms | ActiveRecord: 2.1ms)

#logs on show
2016-03-13T11:05:41.797462+00:00 app[web.1]: Started GET "/prosjekter/fdas" for 193.90.166.63 at 2016-03-13 11:05:41 +0000
2016-03-13T11:05:41.799433+00:00 app[web.1]: Processing by ProjectsController#show as HTML
2016-03-13T11:05:41.799463+00:00 app[web.1]:   Parameters: {"locale"=>"en", "id"=>"fdas"}
2016-03-13T11:05:41.801877+00:00 app[web.1]:   Project Load (1.0ms)  SELECT  "projects".* FROM "projects" WHERE "projects"."slug" = $1  ORDER BY "projects"."created_at" DESC LIMIT 1  [["slug", "fdas"]]
2016-03-13T11:05:41.802721+00:00 app[web.1]:   CACHE (0.0ms)  SELECT  "projects".* FROM "projects" WHERE "projects"."slug" = $1  ORDER BY "projects"."created_at" DESC LIMIT 1  [["slug", "fdas"]]
2016-03-13T11:05:44.337164+00:00 heroku[router]: at=info method=GET path="/prosjekter/fdas" host=www.connexmalermester.no request_id=69e57e36-b4ef-4637-a89c-39cecbb2c0cc fwd="193.90.166.63" dyno=web.1 connect=0ms service=2539ms status=200 bytes=8091
2016-03-13T11:05:44.326576+00:00 app[web.1]:   Rendered projects/show.html.erb within layouts/application (2523.2ms)
2016-03-13T11:05:44.328984+00:00 app[web.1]:   Rendered layouts/_header.html.erb (1.4ms)
2016-03-13T11:05:44.331486+00:00 app[web.1]:   User Load (1.1ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1  ORDER BY "users"."id" ASC LIMIT 1  [["id", 1]]
2016-03-13T11:05:44.333181+00:00 app[web.1]:   Rendered layouts/_signed_in.html.erb (0.9ms)
2016-03-13T11:05:44.333735+00:00 app[web.1]:   Rendered layouts/_footer.html.erb (0.4ms)
2016-03-13T11:05:44.334226+00:00 app[web.1]: Completed 200 OK in 2535ms (Views: 2529.9ms | ActiveRecord: 2.1ms)