Disable the optimized hash on iOS, seems to crash.

Except not for me, not sure why.
Workaround random headless timeouts on Android/etc.

Seems like we have stack corruption, so probably it's not that XMM etc.
need to be saved.  Not sure what exactly is up.
Merge pull request #4620 from unknownbrackets/ios-minor

Try to workaround iOS crash, tweaks