Hi! First time working with H.265 media. They are barely playable on my old computer, so I created proxies from it (ProRes Medium Resolution). Some files are interviews with audio in file: those had no problem switching to proxies and playing without issues. Other files are product b-roll at high speed and no audio in file. All those files without audio don't switch to proxies (the proxies are created, are attached to the masters, but Premiere doesn't switch to them to use them). I'm behind a NDA so I can't share files for others to test, but is this a known issue?   I tested on two computers (an iMac and a Macbook), with the media on a 8-bay RAID TB2 drive, then from an external USB3 SSD and even on the local SSD drive. Same issue all the times. Also tested on Premiere v23.3 and v23.6, again no fix. PS: I ended up transcoding all the footage using 'EditReady' to Apple ProRes 422HQ and use those as my masters. ... View more