This is very similar to previously asked questions but I've rummaged through them and not found a solution.
I have an old Audiobox USB and run Studio One Artist version 2.0, from 2011. It's the one that came with the audiobox.
I used to use Cubase, but that started crackling after I installed windows 10, so I started using Studio one instead, which worked fine. I haven't used it for a while, but I tried again this morning and it crackles terribly when I start recording audio, and the crackles are on the playback as well.
I updated the driver to the latest Universal Control and shut down everything I could on the laptop but it's still the same.
Task Manager shows a system interrupt using 99% of my CPU.
Audacity works fine when I record on that.
My laptop is an old Toshiba Satellite C50D, which has an AMD A4 quad-core processor and 8Gb of RAM.
A. Try Studio One 4 Prime?
B. Update my audiobox to a newer model?
C. Replace the whole setup?
D. Something else I haven't thought of?