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flyinghead / flycast

Flycast is a multiplatform Sega Dreamcast, Naomi, Naomi 2 and Atomiswave emulator
GNU General Public License v2.0
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[Xbox Series] Flycast stuttering a lot when game is on external SSD drive #1425

Open BTr-RJ opened 4 months ago

BTr-RJ commented 4 months ago

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Platform / OS / Hardware: Xbox Series S

Github hash:

Hardware: Xbox Series S

Description of the Issue

Flycast is stuttering a lot, in all games i tested (Tennis 2k2, Sonic Adventure 2, Daytona USA) even using native resolution. Tried both standalone and Retroarch's libretro core. Same problem. I´m using more demanding emulators (xbsx2 and dolphin) that do not have this issue. Tried commits 67c4e62 and ff91d11

Debugging Steps Tested

Logs Gathered



**_Screenshots_**
flyinghead commented 4 months ago

Nobody seems to be having this issue on Series S or X. Check that Flycast has been deployed as a "Game" and not an "App" (in the DevMode app list). Delete emu.cfg to start with default settings.

BTr-RJ commented 4 months ago

Nobody seems to be having this issue on Series S or X. Check that Flycast has been deployed as a "Game" and not an "App" (in the DevMode app list). Delete emu.cfg to start with default settings.

It is deployed as "Game" already like all other emulators i have installed. It had been about 3-4 months since I last messed with emulation on Xbox, and I decided to come back now. I remember there were no stutters before.

I have deleted emu.cfg, everything to default and still stuttering a lot, microstutters that ruins the experience. The audio also has stutters. They seem like small hiccups during gameplay.

I can make a video if it helps. Like i said, others Emulators, even more demanding are running fine

BTr-RJ commented 4 months ago

Testing further. I transferred some games to Xbox's internal SSD and apparently the stutters disappeared. I was testing before using my USB 3.0 external hard drive with the games. But still, it doesn't make sense for this hard drive to be the source of the problem, as I also have much larger PS2 and Gamecube/Wii games on it that are not causing stutters in their respective emulators

flyinghead commented 4 months ago

A user reported a similar issue when using an external USB SSD hard drive. He had no issue with a cheap 32 GB USB flash drive.

BTr-RJ commented 4 months ago

A user reported a similar issue when using an external USB SSD hard drive. He had no issue with a cheap 32 GB USB flash drive.

I will try later with a flash drive, but it still does not make any sense...a slow drive performing better than a faster

BTr-RJ commented 4 months ago

Just tested with a slow 16gigs USB 2.0 SanDisk flash drive using a hub and there was no stutter. My USB 3.0 external drive is still stuttering only in Flycast. Any explanation to this?

flyinghead commented 4 months ago

No, I don't have any explanation. I checked if there was any unexpected disk access when a game is running and there isn't any. Flycast keeps the .CHD and cue/gdi track files open but only reads from them when it needs to. Nothing else.