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.
How big is the file u working on? And what alternative FOSS program would u rather be working on. I haven't looked into FOSS alternatives to illustrator in a while.
I think it is an old HDD. In my office new equipment is not abundant, only the design department, to which I belong and which is not so big, has this kind of problems.