Hello there,I really like this colorscheme,but it's too slow to startup with this plugin enabled,even if not set to one-dark colorscheme

a startuptime log shows how greatly it affects this:

times in msec
clock self+sourced self: sourced script
clock elapsed: other lines
000.012 000.012: --- VIM STARTING ---
000.250 000.238: Allocated generic buffers
000.922 000.672: locale set
000.947 000.025: GUI prepared
000.956 000.009: clipboard setup
000.966 000.010: window checked
001.807 000.841: inits 1
001.837 000.030: parsing arguments
001.840 000.003: expanding arguments
001.881 000.041: shell init
002.238 000.357: xsmp init
002.683 000.445: Termcap init
002.776 000.093: inits 2
003.077 000.301: init highlight
005.432 001.902 001.902: sourcing /usr/share/vim/vim81/syntax/syncolor.vim
005.723 002.326 000.424: sourcing /usr/share/vim/vim81/syntax/synload.vim
017.367 011.550 011.550: sourcing /usr/share/vim/vim81/filetype.vim
017.424 014.173 000.297: sourcing /usr/share/vim/vim81/syntax/syntax.vim
018.727 015.599 001.426: sourcing /etc/vimrc
021.882 002.687 002.687: sourcing /home/linusboyle/.vim/autoload/plug.vim
026.714 000.569 000.569: sourcing /usr/share/vim/vim81/ftoff.vim
037.806 000.014 000.014: sourcing /home/linusboyle/.vim/Plug/vim-fugitive/ftdetect/fugitive.vim
037.975 000.048 000.048: sourcing /home/linusboyle/.vim/Plug/vim-markdown/ftdetect/markdown.vim
038.172 008.245 008.183: sourcing /usr/share/vim/vim81/filetype.vim
038.529 000.052 000.052: sourcing /usr/share/vim/vim81/ftplugin.vim
038.927 000.043 000.043: sourcing /usr/share/vim/vim81/indent.vim
039.095 019.948 008.352: sourcing /home/linusboyle/.vimrc.bundles
039.382 000.197 000.197: sourcing /usr/share/vim/vim81/syntax/nosyntax.vim
040.355 000.237 000.237: sourcing /usr/share/vim/vim81/syntax/syncolor.vim
040.531 000.785 000.548: sourcing /usr/share/vim/vim81/syntax/synload.vim
040.568 001.427 000.445: sourcing /usr/share/vim/vim81/syntax/syntax.vim
040.838 000.202 000.202: sourcing /usr/share/vim/vim81/syntax/nosyntax.vim
041.836 000.269 000.269: sourcing /usr/share/vim/vim81/syntax/syncolor.vim
042.010 000.814 000.545: sourcing /usr/share/vim/vim81/syntax/synload.vim
042.046 001.452 000.436: sourcing /usr/share/vim/vim81/syntax/syntax.vim
042.386 000.013 000.013: sourcing /usr/share/vim/vim81/filetype.vim
042.756 000.012 000.012: sourcing /usr/share/vim/vim81/filetype.vim
043.112 000.011 000.011: sourcing /usr/share/vim/vim81/indent.vim
043.480 000.012 000.012: sourcing /usr/share/vim/vim81/filetype.vim
043.848 000.011 000.011: sourcing /usr/share/vim/vim81/ftplugin.vim
044.218 000.012 000.012: sourcing /usr/share/vim/vim81/filetype.vim
044.584 000.010 000.010: sourcing /usr/share/vim/vim81/ftplugin.vim
044.948 000.012 000.012: sourcing /usr/share/vim/vim81/indent.vim
047.312 000.272 000.272: sourcing /usr/share/vim/vim81/syntax/syncolor.vim
048.156 000.271 000.271: sourcing /usr/share/vim/vim81/syntax/syncolor.vim
182.132 135.805 135.262: sourcing /home/linusboyle/.vim/Plug/vim-one/colors/one.vim
184.085 000.515 000.515: sourcing /usr/share/vim/vim81/syntax/syncolor.vim
185.580 000.515 000.515: sourcing /usr/share/vim/vim81/syntax/syncolor.vim
321.393 139.200 138.170: sourcing /home/linusboyle/.vim/Plug/vim-one/colors/one.vim
322.581 303.801 005.876: sourcing $HOME/.vimrc
322.585 000.108: sourcing vimrc file(s)
322.921 000.065 000.065: sourcing /home/linusboyle/.vim/Plug/neodark.vim/plugin/neodark.vim
323.118 000.064 000.064: sourcing /home/linusboyle/.vim/Plug/rename.vim/plugin/rename.vim
323.533 000.346 000.346: sourcing /home/linusboyle/.vim/Plug/tabular/plugin/Tabular.vim
324.487 000.880 000.880: sourcing /home/linusboyle/.vim/Plug/vim-surround/plugin/surround.vim
331.640 007.053 007.053: sourcing /home/linusboyle/.vim/Plug/nerdcommenter/plugin/NERD_commenter.vim
331.867 000.144 000.144: sourcing /home/linusboyle/.vim/Plug/vim-preview/plugin/preview.vim
332.003 000.066 000.066: sourcing /home/linusboyle/.vim/Plug/vim-header/plugin/header.vim
332.542 000.197 000.197: sourcing /home/linusboyle/.vim/Plug/vim-signature/autoload/signature/utils.vim
334.269 002.197 002.000: sourcing /home/linusboyle/.vim/Plug/vim-signature/plugin/signature.vim
353.477 019.100 019.100: sourcing /home/linusboyle/.vim/Plug/vim-unimpaired/plugin/unimpaired.vim
354.954 000.577 000.577: sourcing /home/linusboyle/.vim/Plug/delimitMate/autoload/delimitMate.vim
359.206 005.636 005.059: sourcing /home/linusboyle/.vim/Plug/delimitMate/plugin/delimitMate.vim
359.651 000.353 000.353: sourcing /home/linusboyle/.vim/Plug/vim-gutentags/plugin/gutentags.vim
360.046 000.319 000.319: sourcing /home/linusboyle/.vim/Plug/gutentags_plus/plugin/gutentags_plus.vim
361.139 000.198 000.198: sourcing /home/linusboyle/.vim/Plug/nerdtree/autoload/nerdtree.vim
363.070 000.666 000.666: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/path.vim
363.555 000.166 000.166: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/menu_controller.vim
363.955 000.099 000.099: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/menu_item.vim
364.383 000.142 000.142: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/key_map.vim
364.952 000.279 000.279: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/bookmark.vim
365.562 000.294 000.294: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/tree_file_node.vim
366.423 000.540 000.540: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/tree_dir_node.vim
366.988 000.282 000.282: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/opener.vim
367.602 000.327 000.327: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/creator.vim
367.954 000.062 000.062: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/flag_set.vim
368.429 000.188 000.188: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/nerdtree.vim
369.135 000.439 000.439: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/ui.vim
369.436 000.023 000.023: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/event.vim
369.770 000.048 000.048: sourcing /home/linusboyle/.vim/Plug/nerdtree/lib/nerdtree/notifier.vim
370.701 000.616 000.616: sourcing /home/linusboyle/.vim/Plug/nerdtree/autoload/nerdtree/ui_glue.vim
374.507 000.161 000.161: sourcing /home/linusboyle/.vim/Plug/nerdtree/nerdtree_plugin/exec_menuitem.vim
375.498 000.973 000.973: sourcing /home/linusboyle/.vim/Plug/nerdtree/nerdtree_plugin/fs_menu.vim
375.836 015.714 010.211: sourcing /home/linusboyle/.vim/Plug/nerdtree/plugin/NERD_tree.vim
376.454 000.547 000.547: sourcing /home/linusboyle/.vim/Plug/vim-fugitive/plugin/fugitive.vim
387.158 010.629 010.629: sourcing /home/linusboyle/.vim/Plug/vim-easymotion/plugin/EasyMotion.vim
388.067 000.212 000.212: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/init.vim
389.104 000.300 000.300: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/parts.vim
390.305 003.067 002.555: sourcing /home/linusboyle/.vim/Plug/vim-airline/plugin/airline.vim
390.418 000.023 000.023: sourcing /home/linusboyle/.vim/Plug/vim-airline-themes/plugin/airline-themes.vim
391.815 001.323 001.323: sourcing /home/linusboyle/.vim/Plug/LeaderF/plugin/leaderf.vim
392.319 000.108 000.108: sourcing /usr/share/vim/vim81/plugin/getscriptPlugin.vim
392.626 000.285 000.285: sourcing /usr/share/vim/vim81/plugin/gzip.vim
393.147 000.495 000.495: sourcing /usr/share/vim/vim81/plugin/logiPat.vim
393.221 000.049 000.049: sourcing /usr/share/vim/vim81/plugin/manpager.vim
393.561 000.317 000.317: sourcing /usr/share/vim/vim81/plugin/matchparen.vim
394.502 000.917 000.917: sourcing /usr/share/vim/vim81/plugin/netrwPlugin.vim
394.619 000.082 000.082: sourcing /usr/share/vim/vim81/plugin/rrhelper.vim
394.693 000.040 000.040: sourcing /usr/share/vim/vim81/plugin/spellfile.vim
394.950 000.226 000.226: sourcing /usr/share/vim/vim81/plugin/tarPlugin.vim
395.101 000.120 000.120: sourcing /usr/share/vim/vim81/plugin/tohtml.vim
395.388 000.255 000.255: sourcing /usr/share/vim/vim81/plugin/vimballPlugin.vim
395.686 000.259 000.259: sourcing /usr/share/vim/vim81/plugin/zipPlugin.vim
395.694 002.430: loading plugins
395.773 000.079: loading packages
396.781 000.557 000.557: sourcing /home/linusboyle/.vim/Plug/tabular/autoload/tabular.vim
399.449 003.538 002.981: sourcing /home/linusboyle/.vim/Plug/tabular/after/plugin/TabularMaps.vim
399.635 000.076 000.076: sourcing /home/linusboyle/.vim/Plug/vim-signature/after/plugin/signature.vim
399.683 000.296: loading after plugins
400.191 000.508: inits 3
400.962 000.130 000.130: sourcing /home/linusboyle/.vim/Plug/LeaderF/autoload/lfMru.vim
401.314 000.993: reading viminfo
404.049 002.735: setup clipboard
404.163 000.114: setting raw mode
404.304 000.141: start termcap
404.369 000.065: clearing screen
405.425 000.508 000.508: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/extensions.vim
406.059 000.136 000.136: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/extensions/quickfix.vim
406.725 000.318 000.318: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline.vim
407.232 000.072 000.072: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/extensions/netrw.vim
407.726 000.035 000.035: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/extensions/term.vim
408.408 000.163 000.163: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/util.vim
409.155 000.325 000.325: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/extensions/branch.vim
409.806 000.084 000.084: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/extensions/fugitiveline.vim
410.559 000.193 000.193: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/extensions/whitespace.vim
411.256 000.064 000.064: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/extensions/po.vim
411.803 000.066 000.066: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/extensions/wordcount.vim
412.394 000.035 000.035: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/extensions/gutentags.vim
412.812 000.039 000.039: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/extensions/keymap.vim
417.774 000.085 000.085: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/section.vim
418.275 000.206 000.206: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/highlighter.vim
421.926 000.085 000.085: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/themes.vim
422.200 000.764 000.679: sourcing /home/linusboyle/.vim/Plug/vim-airline-themes/autoload/airline/themes/violet.vim
434.870 000.264 000.264: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/builder.vim
435.821 000.135 000.135: sourcing /home/linusboyle/.vim/Plug/vim-airline/autoload/airline/extensions/default.vim
472.066 064.205: opening buffers
472.918 000.388 000.388: sourcing /home/linusboyle/.vim/Plug/vim-signature/autoload/signature/sign.vim
473.838 000.402 000.402: sourcing /home/linusboyle/.vim/Plug/vim-signature/autoload/signature/mark.vim
484.847 011.991: BufEnter autocommands
484.851 000.004: editing files in windows
492.771 000.659 000.659: sourcing /home/linusboyle/.vim/Plug/nerdtree/syntax/nerdtree.vim
635.648 000.679 000.679: sourcing /home/linusboyle/.vim/Plug/vim-gutentags/autoload/gutentags.vim
636.602 150.413: VimEnter autocommands
636.605 000.003: before starting main loop
673.603 036.998: first screen update
673.605 000.002: --- VIM STARTED ---

I disabled the plugin and start again,this time only 300ms used. It seems not only colorscheme itself but the airline-plugin also takes too much time to load.

and here is my vim version:

VIM - Vi IMproved 8.1 (2018 May 18)
Patchs: 1-258
...
+acl +extra_search +mouse_netterm +tag_old_static
+arabic +farsi +mouse_sgr -tag_any_white
+autocmd +file_in_path -mouse_sysmouse -tcl
+autochdir +find_in_path +mouse_urxvt +termguicolors
-autoservername +float +mouse_xterm +terminal
+balloon_eval +folding +multi_byte +terminfo
+balloon_eval_term -footer +multi_lang +termresponse
+browse +fork() -mzscheme +textobjects
++builtin_terms +gettext +netbeans_intg +timers
+byte_offset -hangul_input +num64 +title
+channel +iconv +packages +toolbar
+cindent +insert_expand +path_extra +user_commands
+clientserver +job +perl +vartabs
+clipboard +jumplist +persistent_undo +vertsplit
+cmdline_compl +keymap +postscript +virtualedit
+cmdline_hist +lambda +printer +visual
+cmdline_info +langmap +profile +visualextra
+comments +libcall +python/dyn +viminfo
+conceal +linebreak +python3/dyn +vreplace
+cryptv +lispindent +quickfix +wildignore
+cscope +listcmds +reltime +wildmenu
+cursorbind +localmap +rightleft +windows
+cursorshape +lua/dyn +ruby/dyn +writebackup
+dialog_con_gui +menu +scrollbind +X11
+diff +mksession +signs -xfontset
+digraphs +modify_fname +smartindent +xim
+dnd +mouse +startuptime -xpm
-ebcdic +mouseshape +statusline +xsmp_interact
+emacs_tags +mouse_dec -sun_workshop +xterm_clipboard
+eval +mouse_gpm +syntax -xterm_save
+ex_extra -mouse_jsbterm +tag_binary
...