Vim is extremely slow

[Harshit]

There is a considerable amount of delay between key press and its result to show up on the screen in vim. This occurs only for the first few lines of every document opened in vim and is extremely irritating.
I've also tried gnome-terminal and it performs fine, so I feel the problem lies with pantheon-terminal.

[Alef Willis Magno Miranda (alefwmm)]

I am also having this problem. Its impossible to use Vim with this issue. The previous version, pantheon-terminal 0.2.x, did not have this issue . With gnome-terminal everything goes just fine.

[stuff (i-r-stuff)]

I also mentioned a bug about this.
I have found a solution (maybe not the best, but it works).

This only works if you have nvidia drivers installed.
Open the nvidia settings, and under PowerMizer, change to maximum performance.

I guess the terminal uses the GPU a ton to render, and when it's lowering clock speeds to save power, it's reducing performance of the terminal.

[Harshit (harricot11)]

I no longer have this problem after installing freya final release.

[Egmont Koblinger (egmont-gmail)]

Same as https://bugzilla.gnome.org/show_bug.cgi?id=730763 ?

[Jacob Crabill (jacob-crabill)]

This just started happening to me recently, after I installed the NVIDIA CUDA toolkit (which also installs the latest NVIDIA graphics drivers and other graphics software). I was using the Ubuntu-supplied Nouveau drivers previously. It's often quicker for me now to wait for Scratch text editor to open, and use that, rather deal with the horrible lag in Vim.

[Zisu Andrei (matzipan)]

Hey Jacob,

It seems like the prime suspect would be the VTE Gnome component. Maybe it's worth escalating this issue to their bugzilla: https://bugzilla.gnome.org/page.cgi?id=browse.html