Illustrator and InDesign running slow on Windows

Hi everyone,
I’m facing severe performance issues with both Adobe Illustrator and Adobe InDesign on a very powerful workstation laptop. After extensive troubleshooting, the situation hasn’t improved at all, so I’m hoping someone here might help me understand what’s going on.
System specifications
•     Laptop: ASUS ProArt P16
•     CPU: AMD Ryzen 9 (high‑end mobile workstation class)
•     GPU: NVIDIA RTX 5070 Laptop GPU
•     RAM: 64 GB
•     Storage: 2 × 2 TB NVMe SSD
•     OS: Windows 11 (fully updated)
The machine is extremely fast in every other application, including 3D, CAD, GIS, and other heavy creative software.
Symptoms
Both Illustrator and InDesign show extreme lag, even with very simple vector files. The issues include:
•     Delayed UI response when zooming, panning, selecting, or moving objects
•     Stuttering and slow redraws
•     Lag even on empty or nearly empty documents
•     Occasional multi‑second freezes
•     Illustrator frequently shows this error:

Resource usage (very abnormal)
This is the most confusing part:
•     CPU usage stays extremely low, even during operations that should be heavy
•     GPU usage is almost zero, even with GPU Performance enabled
•     RAM usage spikes massively, sometimes 20–30+ GB for simple vector files
•     Despite the huge RAM consumption, the apps still lag and freeze
•     No other software on the system behaves like this
It feels like Illustrator and InDesign are not accessing hardware resources correctly, or something is blocking them from using CPU/GPU acceleration.
Troubleshooting already done
I’ve already tried everything I could think of, including:
•     Resetting preferences for both apps
•     Clearing all Adobe caches
•     Full reinstall of Illustrator, InDesign, and Creative Cloud
•     Updating GPU  Studio drivers
•     Testing GPU Performance on/off
•     Assigning the dedicated GPU in Windows graphics settings
•     Disabling ASUS background services that might interfere with GPU or performance
•     Testing multiple files, including brand‑new empty ones
•     Checking SSD health, RAM integrity, temperatures, and background processes
•     Ensuring no overheating, no throttling, no malware
•     System is clean and stable
None of these steps changed the behavior.
What I’m trying to understand
•     Why are Illustrator and InDesign not using CPU/GPU resources even when they clearly need them?
•     Why do they consume so much RAM and still throw “not enough memory” errors?
•     Could this be a conflict with ASUS ProArt services, Windows 11, or a deeper Adobe issue?
•     Is there any known bug affecting hardware acceleration on recent versions?
Any help, insights, or advanced debugging suggestions would be greatly appreciated.
Thanks in advance!