The Beyrl AX features the same SOC/CPU but less RAM than the Burme 2. This thread might give you some insights but yeah, I heavily suspect it’s Samba/SMB related. IIRC it’s a single threaded process/program.
On my Android smartphones and tablets, I also experience slow SMB mounting (15-25 seconds) each time I open the Android Solid Explorer app for SMB2 access. If I use the Samsung Files app on Samsung devices, the SMB mounting is fast.
Strangely, the Solid Explorer app on my Chromebooks is fast. The Apple Files app on an iPad is also fast.
Smart TV’s usually use DLNA to access media over the network and it is fast on all my LG TV’s.
This problem seems to have gone away for now. I would be interested in knowing if some other setting I may have changed affected this slowness, and if anyone else has encountered this issue. @wcs2228 are you still experiencing it?