I am implementing the intel HDMI IP core on an arria 10 using dynamic reconfiguration. I am able to get all lower resolutions and higher resolutions to work except 1080p @ 60 hz with 148.5 Mhz pix clk. 1080p @ 30 hz works at 74.25,hz and 4k30 at 297mhz works. When it is not working all my pll's and transceivers are locked and outputting the correct freq as seen on a scope. the HDMI core vid_lock and locked outputs are all low.