Hard Drive space disappearing for no reason when I open Photoshop and perform tasks!

Hello,

I've run into a very strange issue and wondered if anyone has had similiar problems. From yesterday (I had not updated or changed anything whatsever), whenever I open Photoshop CC 2022, my internal hard drive space flutuates slightly. I've been told this is normal (ish). The main issue is now that when I perform a batch edit of many images (file-automate-batch) with one of my favourite actions, my internal hard drive goes down and down (500mb every few seconds!) until I'm alerted that my hard drive space is nearly empty and I have to 'Force Quit' the app before my computer has a meltdown! After qutting, my hard drive reading goes back to normal (230GB). The RAM usuage goes down and down as well but I expect that because I'm running tasks but that is a little worrying as well beacuase I assume that will slowly go down to 0 and then make me stop what I'm doing.

I spent two hours on 'online chat' with an Adobe rep who had me try all the usual things (unintsall app, reinstall actions, set memory usuage to 70%, toggle use graphics processor, toggle plugin enable generator etc) but nothing even made a slight bit of difference!

I am lost (& Adobe seems to be too!) so any help would be greatly appreciated.

Specs: Late 2013 Mac Pro running MacOS Monterey

3.5 GHz 6-Core Intel Xeon E5

64GB 1866 MHz DDR3

AMD FirePro D500 3 GB 

Thanks,

James