I have a 5 year old iMac running Photoshop CC2019 and I use a Wacom Intuos Pro Tablet. I have innumerable glitches and am looking for any advice/recommendations for a new Mac purchase. My PSD files are usually in the 100 -400 MB file size range. I currently have 1 TB storage, 16 GB RAM, with an older processor. Do I need to splurge on a Mac Pro? Any recommendations for configurations would be appreciated.