I'm running both Kodi 16 and TVH on Fedora 23.
My system specs are as follows:
AMD-A8 7600 3.3Ghz Quad Core APU
32GB DDR3 2133mhz
Tvheadend Drive: 250gb Samsung 850 Evo SSD
No subtitles enabled and this is only affecting live streams - no problems with timeshifting and/or recordings.