Originally Posted by chasiliff
I did a bunch of troubleshooting today and I found the problem with my Roku Ultra to JVC RS500 projector. The Roku will not consistently pass higher than 1080P over a 3ft Monoprice Redmere cable (I had 2 cables, both less than 2 months old to try). Once I put the plain 4' HDMI cable that came with my Philips UHD player from Roku to projector or Roku to Yamaha receiver to 25' Cabernet HDMI monoprice cable to projector, 4K HDR works without a hitch. Very happy now.
These same Monoprice Redmere cables work perfectly with my Philips UHD player to receiver to Cabernet to projector.
FWIW: I have read that a short HDMI cable "can" insert instability and that a longer cable sorts this out. I have read that 5' is the optimum minimum length for an HDMI cable.
Sewell Direct has just shipped their new 30' HDMI cable that is supposedly able to pass 18 gpbs. They have a thread, (with an AVS discount) in the Vendor's section. I've attached a picture. There is no sticker for the HDMI institute premium certification, but the price was low enough that I purchased it. Won't be able to test until the Oppo 203 ships (I've been holding out).
JVC RS600 Chad-callibrated, 120" 1.3g in Batcave HT, Denon X8500 Polk LSiM703 fronts,
RTi-12 rears, LSiM 706 center, Monitor 40 Heights, Monitor 60 FW, FXiA4 Bi-pole sides,
LSiC top front, Infinity 6" VOG. 4X 12" subs w/mini DSP on sub 1 and nearfield 18" from sub 2.