Extremely slow In-Game UI

I'm having an issue with the in-game UI. It's really, really slow, even with very low graphics settings.

When I say it's slow, I mean that when I click on a building and hover over a unit icon, it takes a good second for the icon to turn blue and the unit details to appear above it. I can click on the button during this time, but the button doesn't animate.

Similarly, the unit actions bar has lag. Buttons in the actions bar don't highlight as I mouse over them and clicking on them doesn't produce any click animation. When I hover over movement settings or power settings it takes way too long to open that submenu.

I've disabled the Steam overlay and tried settings lots of different settings as suggested by people on this forum (the big one being changes to the game settings under the Nvidia Control Panel). Attached is a copy of my dxdiag report.

Any help with this would be appreciated!

I had a similar problem with the main menu, I was getting 15 FPS even though the game would run at triple that.
I managed to resolve it by.... um, I forgot. Let me put you on hold

*charming classical music*

Hmm, according to my internet history just follow the suggestions in the sticky thread:
https://forums.uberent.com/threads/how-to-improve-performance-all-video-cards-driver-links.53165/

EDIT
Actually, now that my brain has decided to work, I realize this is completely unhelpful.
Try setting the system prioritization to high.

Thanks for the suggestion. I've previously applied the fixes from that thread and haven't seen any improvements. It's really strange: the main menu UI works fine (maybe a little slow), the game itself works really well, it's just the UI that's wonky.

Two ideas if you didn't tried it yet:

1. Try non-Steam version:
   https://store.uberent.com/Download/Install?titleId=4
   
2. Disable SLI.

Most likely SLI cause your issues.

I'll try the non-steam version. I don't have SLI enabled, though I do have 2 graphics cards (multiple monitors). My motherboard doesn't even support SLI.

Disable any fancy multi-monitor stuff if you're trying to use that.

Unfortunately DxDiag do not indicate if SLI used or not so I just make a guess because usually two GPU mean SLI.

I guess you could say it's pretty...Sly

Hehe, heh.... I'll see myself out.