You might be expecting too much from an audio interface that costs the same as a takeout dinner for two made with parts that costs the manufacturer the price of a jumbo fries. Try substituting with something better and send it back if it doesn’t help. Trying an audiophile DAC meant for playback (instead of an inexpensive audio interface from a music store) in your system, for example, costs nothing if you only use it to troubleshoot the problem. Or borrow one from a friend.
If it doesn’t fix the problem you can delve deeper into computer optimization (switching USB ports, disabling onboard audio on MB, changing mice (try wired, not wireless if you haven’t yet, USB isolator as mentioned above etc. etc) which is beyond the short answers that you will see here.