I start DraftSight (2023 SP1), I get the 'No Name' DWG up and I can draw on it. I go and try to open a recent file and the whole system locks up. It does seem that it can open small files - EG the one I drew from the no-name template. Anything else, recent or old with a bit more detail just freezes it. The CPU usage drops to zero and the only way to get out of it is to use the 'End Task' in task manager. Very frustrating.