There could be a million reasons for this.
Please post your new machine specs - especially your audio interface and the audio buffer size. Make sure you are using the latest drivers for all of your hardware (Mainly audio interface, graphics card and USB controller - if using using for audio interface) .
Are you using WDM/KS, WASAPI, MME(32bit)? or ASIO (ASIO being preferred)
Also, you might like to change the title to something like "high latency and skips during recording" or similar - that will get more attention. A separate thread should be posted to address the question of "What's the best way to transfer songs to new computer?"