I have been working around the DNG image size bugs for a long time. It is widely reported in the forums and has been since at least 2019. I ran a really simple test. Open a ARW file in denoise, denoise and save as a DNG file. Open in it Sharpen, and my 4000x6000 is now reported as 171 x 256, even though the files size is 140 MB. No other software was used between the file processing. The bug is in Denoise and should be easy to track down. I think the Denoise code is used in PhotoAI. If it is, that would explain the reported DNG troubles.
Application & Version: Topaz Sharpen AI Version 4.1.0
Operating System: Windows 11 Version 2009
Graphics Hardware: AMD Radeon RX 6600 XT
OpenGL Driver: 3.3.0 Core Profile Context 23.2.2.230217
CPU RAM: 16293 MB
Video RAM: 16066 MB
Preview Limit: 8000 Pixels