is 16 Gigs RAM in a new Mac Mini sufficient to run AI and PS CC without issues?

My 2020 M1 Mac Mini is ALWAYS telling me I don't have enough RAM to even use the paint brush.  I have the 16GB Mac Mini.  It's very frustrating and annoying.  The simplest tasks are sometimes difficult.  I'm not impressed.  My 8GB RAM 2020 Mac Book Pro runs much better.

It should work well.

But RAM isn't the most important thing. The critical factor is the scratch disk. Photoshop moves large amounts of data around, and there is never enough RAM no matter how much you have. So working data are written to temp files on disk. This is the scratch disk. RAM is more of a cache for the scratch disk's main memory.

4-500 GB free space should be minimum, preferably more. NVMe drives are fast enough not to be a bottleneck, so put the scratch disk on the system drive for best performance. The advice used to be a separate scratch disk, but that was with spinning drives with a read/write head that could only be in one place at a time.

16GB of RAM should be OK to run Photoshop but have plenty of spare disk space also.