I just bought a decent new computer and installed SL - I am on Windows 10 with a Raedon R7 Graphics card, 8GB ram, quad-core processor. The entire viewer flashes and seems like it's reloading every 5 seconds. I can run SL on Ultra with no lag, no operating issues apart from this screen flashing issue. It's like a strobe light. It settles down when I don't move, but as soon as I click something or move it begins to flash. I tried updating the graphics driver, it suggested Catalyst on the AMD site. I also tried different graphics settings, like lowering it all the way to basic and removing shadows and such, they don't help. :smileyfrustrated: It's quite frustrating as I am a FT merchant and it makes it impossible to work. Any clues?