Dreamcast/flycast Games freezes

[NewKid]

Hi guys!
Im using Recalbox 7.1.1, Raspberry pi4 model B 4GB RAM (not overclocked) and i encountered these problems while playing dreamcast games;

Evolution world of sacred devices - freezes in 3rd ruins (the fire ruins) in 8th floor
NBA 2k2 - freezes when you try to shoot/pass the ball near the ring almost everytime
House of the Dead 2 - Freezes in random areas

Anyone knows if the problem is the core or bios? tnx

[Zing]

@NewKid To find out if the BIOS is the problem, just go to Recalbox's internal BIOS checker and check.
To find out if the problem is the core, do the test by changing the core and see if the problem persists.
It may be the ROM, do not disregard this possibility.

It has no direct relationship, but see if it helps:
https://forum.recalbox.com/topic/22882/impossible-de-lancer-un-jeu-dreamcast-sur-pi4

[NewKid]

@Zing bios seems fine, i will test core as you said. Tnx

[NewKid]

Tried Different ROMs still the same problem, also tried another storage device (Thumb Drive), still the same.

Tried NBA 2k1 and it has the same problem.

Maybe the Pi4 needs to be overclocked? idk

[Zing]

@NewKid I don't have an Rpi4, so I can't test it.
I don't know how much performance you want, Rpi4 already has a good performance, but if you want to test the overclock, see this topic:
https://forum.recalbox.com/topic/21649/overclocking-pi4-with-recalbox-7

[helcril]

Hi NewKid. I have the same problem with NBA 2K and NFL 2K games.
They freeze all the time, but at random moment (do not working too long though).
Have you found any solution yet?