Bootcamp issues MBP Retina 13" 2015

Hi all,

I've been playing with my new mac for a few days now and I've got a few issues - not with OSX, but with Windows 8.1 (Bootcamp).

Eventually everything installed ok and it's been running fine, however here are the problems:

1) the force trackpad doesn't work reliably in Windows - Primarily this is related to clicking and dragging, which can take a few tries before it responds properly. Also the right click sometimes doesn't respond at all (though i get the feedback from the force touch track pad). I've tinked with the various settings in the bootcamp control panel but nothing has improved it.

2) My external monitor, when connected to the MBP via DisplayPort, keeps losing sync and produces a black screen for a few seconds. Initially I though this was completely random, but I can now reliably recreate the issue in some instances - e.g. when i load gmail via googlechrome, it loads fine, but then the screen goes blank for a few seconds. The MBP display doesn't turn off. This happens in both extended display and duplicate display (mirror) modes, at any resolution. the odd thing is it only happens when the monitor is connected via DisplayPort - HDMI and VGA connections work fine. I have to connect via DisplayPort though as I want to run the monitor at its full resolution (2560x1440) which isn't supported on the HDMI output of the MBP. Note every time the monitor drops out, a short, static noise emits from the monitor speakers.

In relating to 2), i've also noticed an issue when playing YouTube videos - they either play too fast or too slow (causing intermittent monitor dropouts as above). This is really odd! Disconnecting the external monitor and it works fine on the MBP.

I suspect both of the above issues are driver related - anyone else had similar issues and/or can offer advice on how to fix??

Thanks in advance

Mike