Wacom Intuos 2018 (M) not working with Macbook Air 2020

I recently bought a new Macbook Air 2020, but my old Wacom tablet kept cutting out so I bought a new one - Intuos BT Medium, but now that one is cutting out too.

It will work fine for about 2 hours (I use it for photoshop/illustrator) and then it will just cut out and stop working, the light will go off but it will still be visible as connected on the Wacom desktop centre.

I then reset everything, remove the driver and re-download it all and then it starts working again, but after a couple hours of work it will cut out again, which is obviously very frustrating to keep having to reset everything.

I thought it was the Wacom, but now thinking it might be the Mac as it was doing a similar thing with my last tablet.

Any ideas what might be the problem?

Thanks!