What exactly is happening? If you get a notification from Easy Anti-Cheat, then you didn't read the installation notes properly. Otherwise try renaming d3d11.dll to winmm.dll Furthermore, it's absolutely essential that you also purchased the game on Steam, as it's required for my patch - just to mention it, no insinuation.
I know some games like Chaos Legion on PC that have effects like depth of field tied to resolution; at 1080p it's muted to the point it's invisible but at 480p-dgvoodoo'd to 1080p the depth of field effect is low-res and pixelated. However, for Contracts I don't recall any type of resolution-dependant effects in use, I last played the game a few months ago and nothing in particular caught my eye unless I'm wrong as the only other system I've played it on is the PS3 HD edition.
Didn't take a
Not really. 1.3 added the .exe patched with LAA 4GB memory patch, a "DX11-Wrapper" (??? no idea which one), the Widescreen patch+dgvoodoo2, a Reshade preset, AI upscaled skins (including the unused, HD 47 one and the uncensored skins) and the briefcase & blood decal textures from Blood Money.
1.4 just added more upscaled pistol textures and redrawn Silverballer engravings.
I've seen the trick in the article. What bothers me is that effects scale will stay at 720p like you said;