Hi Walter
When you say your recordings lag do you mean the audio goes out of sync? What are you using to play the recording back on for example VLC player etc. or are you trying to play them after you imported them to editing software like Adobe Premiere?
Manycam does not record at a constant framerate therefore when you import a file into editing software it can’t play it back smoothly. There are workarounds that use free software. and there is a thread about it Video Fixed Frame Rate Recording Request
and here Recording Video
If your glitching problem is occurring when playing the file back in something like VLC player it may mean that your computer’s CPU was overloaded and it was trying to do the best it could even though it was at or close 100 percent use.