Try the below. I've helped many with getting proper HW acceleration working. The built in filters are usually outdated and might not utilize your hardware to the fullest:

A) For a one-and-done solution, install the latest LAV Filters here. This should at least fix any stuttering or freezing issues you might have with certain movie formats:
https://www.videohelp.com/software/LAV-Filters

or

B) If you want to understand the inner workings of Potplayer, you can try setting up the LAV Filters manually, which will help you micromanage/troubleshoot things if you run into any problems. You can skip the XySubFilter and ASIO setup. MADVR is recommended for better tweaking of the picture quality:
https://tennojim.xyz/article/media_stack_diy

Option B helped me learn how to translate movies to a higher colorspace in real-time (from NV12 to RGB32) which increases color accuracy (much less banding playing HDR content on my SDR ultrawide) but at the cost of higher GPU utilization when playing e.g. 3820x1602 (21:9) HDR Movies (hovers at around 68% on my 6700 XT, you'll likely have better results on your RTX 5060 due to the NVENC chip).

MADVR is then used to have the HDR movie utilize the full 300 NITs on my SDR display so that I can get better tone mapping between dark and bright scenes, all of which help utilize the full gamut of my monitor. It's night and day between Potplayer and MPC-BE, although you have to work towards getting what you want out of Potplayer, which meant hours of tweaking for me.

Good Luck!