Will updating FFMPEG break my current setup?

[TheDreadPirate]

Windows 10 Enterprise
Intel i7 - 4790 @ 3.40 ghZ
Video Card -- nVidia GeForce GTX 750 Ti - driver 4/23/2023
Ram = 16 GB

Hardware acceleration - OFF in Playback settings ( was causing massive buffer issues even on local network )
HEVC Encoding allowed
Thread Count = 5

Was that what you were looking for?

If your library is entirely H264, you should have hardware acceleration enabled.  I'm pretty sure Kepler supports pretty much every profile H264 has.

You should have the following codecs checked for hardware decoding.

H264
MPEG2
VC1

And "Allow encoding in HEVC format" should be UNchecked.  Since the 750TI doesn't support accelerating that and your CPU is not fast enough to encode that in software.