Hi Everybody! Seems like the built in standard Radeon 5770 of my 5,1 Mac Pro is getting long in the tooth- every time I resize windows or open/close a plugin window in Logic Pro X I'm getting clicks and pops and CPU loads temporarily shoot to max. The Mac has plenty of headroom for audio as this even happens on an empty Logic project. I believe the 5770 either quickly runs out of RAM or OS X (10.11.6) doesn't like this old card anymore. I might be wrong though. If so, please enlighten me. In case a new video card is needed, what would you suggest? I'm using this Mac exclusively with Logic Pro X.