Thank you for trying it out!
Was the UI Text only too small or was it blurry too? I've had a few issues with it being blurry on some computers.
I looked into the portal slowdown and I think I fixed it, but I can't really test it on my own computer unfortunately.
I will look into having options for UI scaling and brightness, could ideas.
The game is still being worked on and I hope to have a new update ready soon. Thanks for the feedback.