ISO Loader 0.8.x Beta + preview of DreamShell v4.0 RC 5

[CrisMod]

Hello everyone, I've been following this forum for a while now and after a few years of tinkering with my Dreamcast, I wanted to contribute back to the community with my experiences. First of all, I want to thank @swat, @megavolt85, and @dragoncity for their amazing work on the guides and tools (if I forgot anyone, please forgive me, I hope to get to know you all eventually).

I have updated my Dreamcast with 1TB of Internal SSD, RetroDream v3.0.0 and Dreamshell 4.0 RC5 (although RetroDream may need an update to follow Dreamshell RC5 changes). However, I have noticed some issues with Dreamshell 4.0 RC5:

1. When running the speed test using the "DS_CORE.bin" from Dreamshell RC4, I get a maximum transfer rate of around 100 MB/s (write is less, but I can't remember exactly how much). But when I run it with the "DS_CORE.bin" from RC5, the speed test drops to 37 MB/s / 24 MB/s.
2. The game Tomb Raider Chronicles has a random freezing issue in-game, which happens sometimes when pressing start to enter the menu or during scene changes. It seems like there's a problem with loading new data, causing the game to freeze. These freezes happen after about 5 minutes of playtime give or take.

For the last point, I'm very particular about disk fragmentation, so I format the disk with zero fill before testing new ROMs to ensure a completely clean disk. Then, I copy all the system files again, making sure they're properly aligned without any fragmentation issues.

So far, the only game I've encountered this problem with is Tomb Raider Chronicles, even though I've tried different ROMs and preparations (but ultimately use the ones converted by @megavolt85 which work well). Other games I've tested till now work fine in the future i will post others if i will find any.

My question regarding the speed test is - is it normal for Dreamshell 4.0 RC5 to be slower compared to RC4?