After checking all my computer's drivers as indicated by support, I verified that my AMD graphics card driver is not the last one (indicated on the Enscape website - recommendations), it should be Professional 21.Q4, and what is installed on my iMac is 20.45.
So far I managed to get Enscape to run minimally well by making some adjustments to the settings, turning off Denoiser and Auto Upsampling, apparently everything is ok, there is just a little lag when the window is large, but nothing bad.
Anyway, going back to the issue of the graphics card driver not being 21.Q4, I found the page on the Enscape website that mentions this issue, I downloaded it from the AMD website, and I got an error 173 - The AMD Software installer cannot proceed because no AMD graphics hardware has been detected on your system. Is this something that a user has reported?
Apparently the problem is with my computer (or whatever it is) and not with Enscape, although now Enscape is stable