Dell G2724D 1440p Blurry Text and Logos (After moving from 4k)

I recently purchased the above monitor after having used a 4k 60hz monitor for some time. I love the higher refresh rate but I have noticed that logos for example on the taskbar appear slightly blurry and I am finding that the text font is different and text seems harder to read. It is almost like I have to strain sometimes to focus on the words and the text seems slightly blurred or distorted. Is this just me getting used to 1440p from 4k or are there settings or something I should adjust? I have checked ClearType and scaling is set to 125% but the problem appears even at default 100%. I have messed around with sharpness settings but cannot see a difference.