[rdenno]

Problem

Since #794, Hyrule Warriors: Age of Imprisonment no longer boots. About 8 s in, it starts writing through null pointers (Unmapped Write32/64 @ 0x0–0x34). Then come SparseLargeVector faults and endless Unmapped Read64 @ 0xfffffffffffffbb8, and the game sits on its first loading screen forever.

Cause

#794 removed the storage read throttle for Switch 2 titles (fs_i_storage.cpp), so every read completes with no delay at all. Hyrule doesn't survive that.

How it was narrowed down, using eden-cli boots of a new game:

Build	Result
df2989c794 (just before #794)	boots
f677ed8323 (#794 merged)	fails, 6/6
f677ed8323 with #794 reverted	boots
revert + #794's CPU-side files re-applied (Dynarmic, JIT glue, timing, thread placement, settings)	boots
f677ed8323 + EDEN_NX2_PERF_OPT=0, EDEN_NX2_PRESENT_QUEUE=0 or EDEN_NX2_INLINE_CNTPCT=0	fails
f677ed8323 + EDEN_NX2_FS_READ_MBPS=40, 100 or 200	boots
f677ed8323 + EDEN_NX2_FS_READ_MBPS=300 or 400	fails

Fix

Switch 2 titles get a 100 MB/s default instead of no throttle. EDEN_NX2_FS_READ_MBPS still overrides it, and 0 still turns it off.

The 100 MB/s value keeps what #794 wanted for Ocarina of Time's opening video. Late frames the video decoder dropped over 90 s of the title movie:

Read speed	Late-dropped frames
no throttle	262
100 MB/s (this PR)	284
40 MB/s (old default)	376

Testing

• Hyrule with this commit: boots 2/2 at the new default. With the env override on the same code: 3/3 at 100 MB/s and 3/3 at 200 MB/s. Two full runs at 200 MB/s through the first fight.
• OoT: the title movie runs at 100 MB/s, with the numbers above.
• Only tested on Windows, RTX 5060 Ti, local MSVC CLI build.

Assisted By: Claude Opus 5.5