I have a 4k 27" monitor and I have had to run it in 1440p recently because its all my dell xps can manage and its usable but a noticeable downgrade. My 24" 1440

I have a 4k 27" monitor and I have had to run it in 1440p recently because its all my dell xps can manage and its usable but a noticeable downgrade. My 24" 1440p monitor at work looks perfectly fine though.