I use TS4K with YTTV fairly frequently to play back cloud recordings and have yet to run into any issues. (Don't tune to anything live though).
Let us know how that goes. I briefly paired TiVo remote with CGTV and it worked but was a little flaky with some response delays and not all buttons working so didn't seem like a solid option. I'm using Shield as my primary streamer now and TS4K is in a drawer. Shield remote is not the best so TS4K remote would be great to use if it works well.In fact, I'm hoping I can pair the remote with the Shield when it arrives tomorrow.