diff --git a/vim/after/ftplugin/go.vim b/vim/after/ftplugin/go.vim
index c2cbf7e..ae4c688 100644
--- a/vim/after/ftplugin/go.vim
+++ b/vim/after/ftplugin/go.vim
@@ -1,3 +1,8 @@
+nmap <silent> gvd <Plug>(go-def-vertical)
+nmap <silent> gsd <Plug>(go-def-split)
+nmap <silent> gvD <Plug>(go-def-type-vertical)
+nmap <silent> gsD <Plug>(go-def-type-split)
+
 nmap <silent> <leader>gb :up<bar>:GoBuild<cr>
 nmap <silent> <leader>gr :up<bar>:GoRun<cr>
 nmap <silent> <leader>gc :GoCallers<cr>
diff --git a/vimrc b/vimrc
index 357a5e9..9485e64 100644
--- a/vimrc
+++ b/vimrc
@@ -94,6 +94,9 @@ augroup vimrc
   autocmd InsertLeavePre * set nocul
   " use tabs in .gitconfig
   autocmd BufEnter .gitconfig setlocal shiftwidth=2 tabstop=2 noexpandtab
+  " Quickfix window is always full-width.
+  " https://github.com/fatih/vim-go/issues/1757#issuecomment-565130503
+  autocmd FileType qf if (getwininfo(win_getid())[0].loclist != 1) | wincmd J | endif
 augroup end
 
 " But, don't remember the current directory for a given file:
@@ -139,13 +142,14 @@ nmap <silent> <leader>l :lclose<cr>
 
 " deoplete configuration
 packadd! deoplete.nvim
+" Disable completion messages:
+set shortmess+=c
 let g:deoplete#enable_at_startup = 1
 call deoplete#custom#option('num_processes', 6)
-call deoplete#custom#option('max_list', 50)
-call deoplete#custom#option('auto_complete_delay', 10)
-call deoplete#custom#option('auto_refresh_delay', 10)
-" https://github.com/Shougo/deoplete.nvim/issues/965#issuecomment-482925193
-" Seems to be causing autocomplete issues so removing for now.
+call deoplete#custom#option('max_list', 250)
+call deoplete#custom#option('auto_complete_delay', 0)
+call deoplete#custom#option('auto_refresh_delay', 250)
+call deoplete#custom#option('refresh_always', v:false)
 call deoplete#custom#option('omni_patterns', {
 \ 'go': '[^. *\t]\.\w*',
 \})