Thanks for your words and suggestions, we have had some people experience performance issues under rare circumstances, please check if your "Lovense Integration" setting was enabled, and try disabling it to try to prevent excessive memory use. If that does not work, please try deleting and reinstalling your Didnapper 2 game and mod, as sometimes files get messed up for no reason and could cause lag. I think we have some fixes in a beta version that is not yet ready for release that should solve some performance issues, so hopefully a future version will improve this issue.
We may consider adding sock gags in the future, but some people may find them unappealing so they would probably be optional and/or locked by a content filter setting. I like sock mittens, and in the future we are trying to create a system to have multiple layered mittens, so socks would work well for that. The shock collar mechanics you describe are more or less how I was imagining it being implemented, but it will take quite some time before we're able to add that. Earplugs are a good idea that also would not require additional graphics, probably.