Hi and welcome.
Emumovies does occasionally have issues. This is a API issue and nothing Launchbox can do anything about. We are separate sites. Also the emumovies site, and the api ect is very different. So apologies there.
With all due respect, your OP and your reply leaves me scratching my head some what. I am not really sure what exactly you are asking. If its a simple path change, then that is available at all times.
Ah OK. I was just curious as I was prompted a couple of hours ago to download it, but you hadn't posted here about it. Cool, performance improvements are always welcome, i'll grab the next one in the morning.
Hmm, i have 9500 games in my collection with ram set to 4gb also with no issues (i5 3570k, 16gb ram, gtx 1060, win 10 64bit). Are you sorting your games any other way than by title?
There is no reason that you should lose all your data and images. Are you sure you reinstalled to the correct location? Maybe you installed it a level up, so now have a Launchbox folder in your Launchbox folder, I have seen people do this before when installing over the top of a current install.