I have the same issue with stock gvim 7.4 in Ubuntu 16.04(Xenial) running on VMWare 12.5.0 player with Windows 10 host.
Paging up/down (ctrl-b,ctrl-f) is very slow. Almost a 100x slow down.
dkwho@mumble:~$ time vim -u NONE -U NONE -S test-redraw-speed.vim /etc/init.d/README
real 0m2.706s user 0m0.624s sys 0m1.196s dkwho@mumble:~$ time gvim -u NONE -U NONE -f -S test-redraw-speed.vim /etc/init.d/README
real 23m4.198s user 0m32.328s sys 0m5.904s
I have the same issue with stock gvim 7.4 in Ubuntu 16.04(Xenial) running on VMWare 12.5.0 player with Windows 10 host.
Paging up/down (ctrl-b,ctrl-f) is very slow. Almost a 100x slow down.
dkwho@mumble:~$ time vim -u NONE -U NONE -S test-redraw- speed.vim /etc/init.d/README
real 0m2.706s speed.vim /etc/init.d/README
user 0m0.624s
sys 0m1.196s
dkwho@mumble:~$ time gvim -u NONE -U NONE -f -S test-redraw-
real 23m4.198s
user 0m32.328s
sys 0m5.904s