I am glad to say that I have not seen any of that behavior on my Retroid machine. It is running Win 98 SE, and apparently has the too much memory hack already built in to an ini from when I originally installed it. Will run some more missions; hoope behavior doesn't deteriorate after I have installed the unofficial Win98SE Service Pack (which did update various dll's so that MiG Alley now runs beautifully).
Specs are roughly:
768 mb RAM
Win98 SE SP1 (unofficial)
SB Live iirc
Only chronic drawback is slight screen issues as I am using a VGA connection to my widescreen Samsung 24" lcd. Nothing much though for either LB edition.