Hi Djordje,
Hardware specs might not be the problem.
I have a 1200 MHz Athlon with 512 MB of RAM and Archicad runs on it.
If I had to guess, I would say it may be related to the Java environment installed.
Loving Archicad since 1995 - Find Archicad Tips at x.com/laszlonagy
AMD Ryzen9 5900X CPU, 64 GB RAM 3600 MHz, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), Windows 10 PRO ENG, Ac20-Ac28