I recently replaced my 4 x 22" monitors with a 4k TV - giving me back some much-needed desk space. Unfortunately MetaTrader and, more importantly the Auto Trade Manager, looked absolutely awful, with both extra-large and extra-tiny font sizes.
The cure was quite simple and I share this for others thinking of doing same or experiencing similar problems on high-res' screens.
This webpage describes the problem and solution quite nicely but to summarise ...
Backup your registry then press Windows Button + R ; type “regedit” then click OK.
Copy this file to your MetaTrader folder...
Restart your MT.
Just be careful with your regedit - you can create all sorts of grief there. Otherwise it was very simple in the end and my MT4 looks a hell of a lot better on 4k now.
Snorm trades only with GKFX and has no hesitation in recommending them, for tight fixed spreads and quick execution (even during NFP, from personal experience).
Open an account here