This is not my PC, it’s my work PC (which is worse). If it were up to me, I would do everything with FOSS, but it is mandatory to use Adobe, which has been getting worse day after day.
The computer is not the best, but it runs Inkscape and Krita smoothly. Adobe is fucking bloatware.
Based on 100% disk usage, you probably use HDD (Check performance section in Task manager to see disk model to confirm that). Windows performance on HDD is awful since around Windows 8. SSD is pretty much a requirement for Windows, otherwise you will have terrible experience.