PS3 FAT CECHC04 shuts down when booting a PS2 game with ps2_netemu

Vendicatorealato

Forum Noob
Greetings to everyone in the community.

I'm here to report an absurd problem that I have: after I boot one time a PS2 game with ps2_netemu with webMAN (by holding R1 while mounting the .iso), I'm not able to boot again (or restart from in-game menu) the same game with it because the console automatically power off and the red LED starts blinking.
I tried three games and all of them give me the same result.
I'm on a PlayStation 3 CECHC04 with Evilnat firmware 4.92.2 PEX (both LV2 Kernel and Target Type are CEX mode) and webMAN MOD 1.47.48n, and I have no issues with ps2_gxemu.
The reason why I tried ps2_netemu is that Smash Cars (EUR) [SLES_518.00] freezes after a few seconds in gameplay with ps2_gxemu, while it seems to work correctly with ps2_netemu.
The other games that I tried are Ghost Rider (EUR) [SLES_543.17] and Crash Bandicoot - The Wrath of Cortex (EUR) (v2.01) [SLES_503.86], and always happens the same thing: the first time they booted, but then never again, the PS3 shuts off. These three are the games I have tried, but I expect the same behavior with other games if I'll keep trying with other ones.

Then I tried to convert Smash Cars (EUR) .bin/.cue to PS2 Classics .pkg, and it booted, but at this point, the problem returns: I restarted the game from the in-game menu, and the console has shut down; I tried to boot it again from the XMB, and I can't start it anymore because the issue occurs again.
Now I deleted SCEVMC0.VME and SCEVMC1.VME from dev_hdd0/game/SLES51800/USDIR/SAVEDATA, but the issue is still there.
I uninstalled the game, then re-installed the .pkg, and this time it booted.
I didn't save, closed the game, booted it again… and nothing, I've got the power off.

The assumption that can be made is that for the PS2 Classics version something is written somewhere in dev_hdd0/game/SLES51800, since the uninstall and re-install solved temporarily the problem, but in the case of using ps2_netemu by mounting the .iso (or .bin/.cue) with webMAN I have really no idea where this "something" is written.
I deleted the save file of one interested games from the Virtual Memory Card, but it didn't resolve.

I hope that a solution can be found, or that at least the cause can be identified… and I hope that is not an issue specifically releated to my system.
I already talked with aldostools, whom I thank, by opening an issue on the GitHub page of webMAN: https://github.com/aldostools/webMAN-MOD/issues/1334.

Thanks to anyone who takes an interest in this problem.

It seems I've found the cause, although I don't understand at all why this causes the console to power off (as if it were a critical error or such): I enabled Settings -> Game Settings -> PS/PS2 Upscaler to "Normal" or "Full Screen", and apparently the shutdowns have ceased to occur.
I can disable the upscaler via in-game settings in ps2_netemu, but not in ps2_gxemu, so I'll have to toggle it in general settings when I need one or another.

It also remains unclear to me why the games were able to boot once during testing, but sometimes I shouldn't ask myself too many questions.
 
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